mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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DynamicSignal: Reformat to match conventions
This commit is contained in:
parent
5b386f21fb
commit
db3ffc2a70
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@ -29,40 +29,47 @@ using System.Reflection;
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using System.Runtime.InteropServices;
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using System.Collections;
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namespace Gst {
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namespace Gst
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{
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delegate void GClosureMarshal (IntPtr closure, ref GLib.Value retval, uint argc, IntPtr argsPtr,
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IntPtr invocation_hint, IntPtr data);
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public delegate void SignalHandler (object o, SignalArgs args);
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public static class DynamicSignal {
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public static class DynamicSignal
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{
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private static readonly int gvalue_struct_size = Marshal.SizeOf (typeof (GLib.Value));
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private static readonly int gvalue_struct_size = Marshal.SizeOf (typeof(GLib.Value));
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class ObjectSignalKey {
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class ObjectSignalKey
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{
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object o;
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string signal_name;
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public ObjectSignalKey (object o, string name) {
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public ObjectSignalKey (object o, string name)
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{
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this.o = o;
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signal_name = name;
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}
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public override bool Equals (object o) {
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public override bool Equals (object o)
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{
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if (o is ObjectSignalKey) {
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ObjectSignalKey k = (ObjectSignalKey) o;
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ObjectSignalKey k = (ObjectSignalKey)o;
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return k.o.Equals (this.o) && signal_name.Equals (k.signal_name);
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}
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return base.Equals (o);
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}
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public override int GetHashCode() {
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return o.GetHashCode() ^ signal_name.GetHashCode();
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public override int GetHashCode ()
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{
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return o.GetHashCode () ^ signal_name.GetHashCode ();
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}
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}
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class SignalInfo {
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class SignalInfo
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{
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uint handlerId;
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IntPtr closure;
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Delegate registeredHandler;
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@ -71,7 +78,8 @@ namespace Gst {
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public IntPtr Closure {
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get {
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return closure;
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} set {
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}
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set {
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closure = value;
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}
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}
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@ -79,7 +87,8 @@ namespace Gst {
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public uint HandlerId {
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get {
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return handlerId;
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} set {
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}
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set {
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handlerId = value;
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}
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}
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@ -87,7 +96,8 @@ namespace Gst {
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public Delegate RegisteredHandler {
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get {
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return registeredHandler;
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} set {
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}
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set {
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registeredHandler = value;
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}
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}
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@ -95,12 +105,14 @@ namespace Gst {
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public Type ArgsType {
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get {
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return argsType;
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} set {
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}
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set {
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argsType = value;
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}
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}
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public SignalInfo (uint handlerId, IntPtr closure, Delegate registeredHandler) {
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public SignalInfo (uint handlerId, IntPtr closure, Delegate registeredHandler)
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{
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this.handlerId = handlerId;
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this.closure = closure;
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this.registeredHandler = registeredHandler;
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@ -110,17 +122,18 @@ namespace Gst {
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MethodInfo mi = registeredHandler.Method;
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ParameterInfo[] parms = mi.GetParameters ();
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this.argsType = parms[1].ParameterType;
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this.argsType = parms [1].ParameterType;
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}
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public void UpdateArgsType (Delegate d) {
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public void UpdateArgsType (Delegate d)
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{
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if (!IsCompatibleDelegate (d))
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throw new Exception ("Incompatible delegate");
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MethodInfo mi = d.Method;
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ParameterInfo[] parms = mi.GetParameters ();
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Type t1 = parms[1].ParameterType;
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Type t1 = parms [1].ParameterType;
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Type t2 = argsType;
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if (t1 == t2)
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@ -134,60 +147,66 @@ namespace Gst {
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throw new Exception ("Incompatible delegate");
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}
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public bool IsCompatibleDelegate (Delegate d) {
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public bool IsCompatibleDelegate (Delegate d)
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{
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if (!IsValidDelegate (d))
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return false;
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MethodInfo mi = d.Method;
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ParameterInfo[] parms = mi.GetParameters ();
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if (parms[1].ParameterType != this.argsType &&
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!parms[1].ParameterType.IsSubclassOf (this.argsType) &&
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!this.argsType.IsSubclassOf (parms[1].ParameterType))
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if (parms [1].ParameterType != this.argsType &&
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!parms [1].ParameterType.IsSubclassOf (this.argsType) &&
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!this.argsType.IsSubclassOf (parms [1].ParameterType))
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return false;
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return true;
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}
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public static bool IsValidDelegate (Delegate d) {
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public static bool IsValidDelegate (Delegate d)
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{
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MethodInfo mi = d.Method;
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if (mi.ReturnType != typeof (void))
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if (mi.ReturnType != typeof(void))
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return false;
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ParameterInfo[] parms = mi.GetParameters ();
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if (parms.Length != 2)
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return false;
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if (parms[1].ParameterType != typeof (GLib.SignalArgs) &&
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!parms[1].ParameterType.IsSubclassOf (typeof (GLib.SignalArgs)))
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if (parms [1].ParameterType != typeof(GLib.SignalArgs) &&
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!parms [1].ParameterType.IsSubclassOf (typeof(GLib.SignalArgs)))
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return false;
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return true;
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}
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}
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static Hashtable SignalHandlers = new Hashtable();
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static Hashtable SignalHandlers = new Hashtable ();
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static GClosureMarshal marshalHandler = new GClosureMarshal (OnMarshal);
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public static void Connect (GLib.Object o, string name, SignalHandler handler) {
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Connect (o, name, false, (Delegate) handler);
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public static void Connect (GLib.Object o, string name, SignalHandler handler)
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{
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Connect (o, name, false, (Delegate)handler);
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}
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public static void Connect (GLib.Object o, string name,
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bool after, SignalHandler handler) {
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Connect (o, name, after, (Delegate) handler);
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bool after, SignalHandler handler)
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{
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Connect (o, name, after, (Delegate)handler);
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}
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public static void Connect (GLib.Object o, string name, Delegate handler) {
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public static void Connect (GLib.Object o, string name, Delegate handler)
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{
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Connect (o, name, false, handler);
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}
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static int g_closure_sizeof = gstsharp_g_closure_sizeof ();
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public static void Connect (GLib.Object o, string name,
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bool after, Delegate handler) {
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bool after, Delegate handler)
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{
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Delegate newHandler;
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ObjectSignalKey k = new ObjectSignalKey (o, name);
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@ -195,8 +214,8 @@ namespace Gst {
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if (!SignalInfo.IsValidDelegate (handler))
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throw new Exception ("Invalid delegate");
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if (SignalHandlers[k] != null) {
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SignalInfo si = (SignalInfo) SignalHandlers[k];
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if (SignalHandlers [k] != null) {
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SignalInfo si = (SignalInfo)SignalHandlers [k];
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if (!si.IsCompatibleDelegate (handler))
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throw new Exception ("Incompatible delegate");
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@ -208,19 +227,20 @@ namespace Gst {
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throw new Exception ("Invalid delegate");
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IntPtr closure = g_closure_new_simple (g_closure_sizeof, IntPtr.Zero);
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g_closure_set_meta_marshal (closure, (IntPtr) GCHandle.Alloc (k), marshalHandler);
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g_closure_set_meta_marshal (closure, (IntPtr)GCHandle.Alloc (k), marshalHandler);
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uint signalId = g_signal_connect_closure (o.Handle, name, closure, after);
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SignalHandlers.Add (k, new SignalInfo (signalId, closure, handler));
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}
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}
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[DllImport ("libgstreamersharpglue-1.0.0.dll") ]
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[DllImport ("libgstreamersharpglue-1.0.0.dll")]
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static extern int gstsharp_g_closure_sizeof ();
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public static void Disconnect (GLib.Object o, string name, Delegate handler) {
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public static void Disconnect (GLib.Object o, string name, Delegate handler)
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{
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ObjectSignalKey k = new ObjectSignalKey (o, name);
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if (SignalHandlers[k] != null) {
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SignalInfo si = (SignalInfo) SignalHandlers[k];
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if (SignalHandlers [k] != null) {
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SignalInfo si = (SignalInfo)SignalHandlers [k];
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Delegate newHandler = Delegate.Remove (si.RegisteredHandler, handler);
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if (newHandler == null || handler == null) {
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g_signal_handler_disconnect (o.Handle, si.HandlerId);
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@ -232,14 +252,15 @@ namespace Gst {
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}
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static void OnMarshal (IntPtr closure, ref GLib.Value retval, uint argc, IntPtr argsPtr,
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IntPtr ihint, IntPtr data) {
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object [] args = new object[argc - 1];
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object o = ( (GLib.Value) Marshal.PtrToStructure (argsPtr, typeof (GLib.Value))).Val;
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IntPtr ihint, IntPtr data)
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{
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object[] args = new object[argc - 1];
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object o = ((GLib.Value)Marshal.PtrToStructure (argsPtr, typeof(GLib.Value))).Val;
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for (int i = 1; i < argc; i++) {
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IntPtr struct_ptr = (IntPtr) ( (long) argsPtr + (i * gvalue_struct_size));
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GLib.Value argument = (GLib.Value) Marshal.PtrToStructure (struct_ptr, typeof (GLib.Value));
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args[i - 1] = argument.Val;
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IntPtr struct_ptr = (IntPtr)((long)argsPtr + (i * gvalue_struct_size));
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GLib.Value argument = (GLib.Value)Marshal.PtrToStructure (struct_ptr, typeof(GLib.Value));
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args [i - 1] = argument.Val;
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}
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if (data == IntPtr.Zero) {
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@ -247,12 +268,12 @@ namespace Gst {
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return;
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}
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ObjectSignalKey k = (ObjectSignalKey) ( (GCHandle) data).Target;
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ObjectSignalKey k = (ObjectSignalKey)((GCHandle)data).Target;
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if (k != null) {
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SignalInfo si = (SignalInfo) SignalHandlers[k];
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GLib.SignalArgs arg = (GLib.SignalArgs) Activator.CreateInstance (si.ArgsType);
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SignalInfo si = (SignalInfo)SignalHandlers [k];
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GLib.SignalArgs arg = (GLib.SignalArgs)Activator.CreateInstance (si.ArgsType);
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arg.Args = args;
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si.RegisteredHandler.DynamicInvoke (new object[] {o, arg});
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si.RegisteredHandler.DynamicInvoke (new object[] { o, arg });
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if (arg.RetVal != null) {
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retval.Val = arg.RetVal;
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}
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@ -260,39 +281,44 @@ namespace Gst {
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}
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[DllImport ("libgobject-2.0-0.dll") ]
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[DllImport ("libgobject-2.0-0.dll")]
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static extern IntPtr g_closure_new_simple (int size, IntPtr data);
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[DllImport ("libgobject-2.0-0.dll") ]
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[DllImport ("libgobject-2.0-0.dll")]
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static extern uint g_signal_connect_closure (IntPtr instance,
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string name, IntPtr closure, bool after);
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[DllImport ("libgobject-2.0-0.dll") ]
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[DllImport ("libgobject-2.0-0.dll")]
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static extern void g_closure_set_meta_marshal (IntPtr closure, IntPtr data, GClosureMarshal marshal);
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class GTypeSignalKey {
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class GTypeSignalKey
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{
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GType type;
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string signal_name;
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public GTypeSignalKey (GType type, string name) {
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public GTypeSignalKey (GType type, string name)
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{
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this.type = type;
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signal_name = name;
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}
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public override bool Equals (object o) {
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public override bool Equals (object o)
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{
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if (o is GTypeSignalKey) {
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GTypeSignalKey k = (GTypeSignalKey) o;
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GTypeSignalKey k = (GTypeSignalKey)o;
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return k.type.Equals (this.type) && signal_name.Equals (k.signal_name);
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}
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return base.Equals (o);
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}
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public override int GetHashCode() {
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return type.GetHashCode() ^ signal_name.GetHashCode();
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public override int GetHashCode ()
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{
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return type.GetHashCode () ^ signal_name.GetHashCode ();
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}
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}
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struct SignalQuery {
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struct SignalQuery
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{
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public uint signal_id;
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public string signal_name;
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public GType itype;
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@ -304,7 +330,8 @@ namespace Gst {
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static Hashtable SignalEmitInfo = new Hashtable ();
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public static object Emit (GLib.Object o, string name, params object[] parameters) {
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public static object Emit (GLib.Object o, string name, params object[] parameters)
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{
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SignalQuery query;
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IntPtr type = gstsharp_g_type_from_instance (o.Handle);
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GType gtype = new GType (type);
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@ -324,7 +351,7 @@ namespace Gst {
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GTypeSignalKey key = new GTypeSignalKey (gtype, signal_name);
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if (SignalEmitInfo[key] == null) {
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if (SignalEmitInfo [key] == null) {
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IntPtr native_string = GLib.Marshaller.StringToPtrGStrdup (signal_name);
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uint signal_id = g_signal_lookup (native_string, type);
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GLib.Marshaller.Free (native_string);
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@ -351,27 +378,27 @@ namespace Gst {
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IntPtr t = Marshal.ReadIntPtr (q.param_types, i);
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GType g = new GType (t);
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query.param_types[i] = (Type) g;
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query.param_types [i] = (Type)g;
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}
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SignalEmitInfo.Add (key, query);
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}
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query = (SignalQuery) SignalEmitInfo[key];
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query = (SignalQuery)SignalEmitInfo [key];
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GLib.Value[] signal_parameters = new GLib.Value[query.n_params + 1];
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signal_parameters[0] = new GLib.Value (o);
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signal_parameters [0] = new GLib.Value (o);
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if (parameters.Length != query.n_params)
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throw new ApplicationException (String.Format ("Invalid number of parameters: expected {0}, got {1}", query.n_params, parameters.Length));
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for (int i = 0; i < query.n_params; i++) {
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Type expected_type = (Type) query.param_types[i];
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Type given_type = parameters[i].GetType ();
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Type expected_type = (Type)query.param_types [i];
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Type given_type = parameters [i].GetType ();
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if (expected_type != given_type && ! given_type.IsSubclassOf (given_type))
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if (expected_type != given_type && !given_type.IsSubclassOf (given_type))
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throw new ApplicationException (String.Format ("Invalid parameter type: expected {0}, got {1}", expected_type, given_type));
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signal_parameters[i + 1] = new GLib.Value (parameters[i]);
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signal_parameters [i + 1] = new GLib.Value (parameters [i]);
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}
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GLib.Value return_value = new GLib.Value ();
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@ -397,23 +424,24 @@ namespace Gst {
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return ret;
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}
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[DllImport ("libgstreamersharpglue-1.0.0.dll") ]
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[DllImport ("libgstreamersharpglue-1.0.0.dll")]
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static extern IntPtr gstsharp_g_type_from_instance (IntPtr o);
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[DllImport ("libgobject-2.0-0.dll") ]
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[DllImport ("libgobject-2.0-0.dll")]
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static extern int g_signal_handler_disconnect (IntPtr o, uint handler_id);
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[DllImport ("libgobject-2.0-0.dll") ]
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[DllImport ("libgobject-2.0-0.dll")]
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static extern uint g_signal_lookup (IntPtr name, IntPtr itype);
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[DllImport ("libglib-2.0-0.dll") ]
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[DllImport ("libglib-2.0-0.dll")]
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static extern uint g_quark_from_string (IntPtr str);
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[DllImport ("libgobject-2.0-0.dll") ]
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[DllImport ("libgobject-2.0-0.dll")]
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static extern void g_signal_emitv (GLib.Value[] parameters, uint signal_id, uint detail, ref GLib.Value return_value);
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[StructLayout (LayoutKind.Sequential) ]
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struct GSignalQuery {
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[StructLayout (LayoutKind.Sequential)]
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struct GSignalQuery
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{
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public uint signal_id;
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public IntPtr signal_name;
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public IntPtr itype;
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@ -423,7 +451,7 @@ namespace Gst {
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public IntPtr param_types;
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}
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[DllImport ("libgobject-2.0-0.dll") ]
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[DllImport ("libgobject-2.0-0.dll")]
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static extern void g_signal_query (uint signal_id, ref GSignalQuery query);
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}
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}
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