protected override IntPtr HookProc(IntPtr hWnd, int msg, IntPtr wparam, IntPtr lparam)
{
if (msg == 0x4e)
{
this.dialogHWnd = System.Windows.Forms.UnsafeNativeMethods.GetParent(new HandleRef(null, hWnd));
try
{
System.Windows.Forms.UnsafeNativeMethods.OFNOTIFY structure = (System.Windows.Forms.UnsafeNativeMethods.OFNOTIFY)System.Windows.Forms.UnsafeNativeMethods.PtrToStructure(lparam, typeof(System.Windows.Forms.UnsafeNativeMethods.OFNOTIFY));
switch (structure.hdr_code)
{
case -606:
if (this.ignoreSecondFileOkNotification)
{
if (this.okNotificationCount != 0)
{
break;
}
this.okNotificationCount = 1;
}
goto Label_0171;
case -604:
this.ignoreSecondFileOkNotification = true;
this.okNotificationCount = 0;
goto Label_01CF;
case -602:
{
System.Windows.Forms.NativeMethods.OPENFILENAME_I openfilename_i = (System.Windows.Forms.NativeMethods.OPENFILENAME_I)System.Windows.Forms.UnsafeNativeMethods.PtrToStructure(structure.lpOFN, typeof(System.Windows.Forms.NativeMethods.OPENFILENAME_I));
int num = (int)System.Windows.Forms.UnsafeNativeMethods.SendMessage(new HandleRef(this, this.dialogHWnd), 0x464, IntPtr.Zero, IntPtr.Zero);
if (num > openfilename_i.nMaxFile)
{
try
{
int size = num + 0x800;
System.Windows.Forms.UnsafeNativeMethods.CharBuffer buffer = System.Windows.Forms.UnsafeNativeMethods.CharBuffer.CreateBuffer(size);
IntPtr ptr = buffer.AllocCoTaskMem();
Marshal.FreeCoTaskMem(openfilename_i.lpstrFile);
openfilename_i.lpstrFile = ptr;
openfilename_i.nMaxFile = size;
this.charBuffer = buffer;
Marshal.StructureToPtr(openfilename_i, structure.lpOFN, true);
Marshal.StructureToPtr(structure, lparam, true);
}
catch
{
}
}
this.ignoreSecondFileOkNotification = false;
goto Label_01CF;
}
case -601:
CommonDialog.MoveToScreenCenter(this.dialogHWnd);
goto Label_01CF;
default:
goto Label_01CF;
}
this.ignoreSecondFileOkNotification = false;
System.Windows.Forms.UnsafeNativeMethods.SetWindowLong(new HandleRef(null, hWnd), 0, new HandleRef(null, System.Windows.Forms.NativeMethods.InvalidIntPtr));
return(System.Windows.Forms.NativeMethods.InvalidIntPtr);
Label_0171:
if (!this.DoFileOk(structure.lpOFN))
{
System.Windows.Forms.UnsafeNativeMethods.SetWindowLong(new HandleRef(null, hWnd), 0, new HandleRef(null, System.Windows.Forms.NativeMethods.InvalidIntPtr));
return(System.Windows.Forms.NativeMethods.InvalidIntPtr);
}
}
catch
{
if (this.dialogHWnd != IntPtr.Zero)
{
System.Windows.Forms.UnsafeNativeMethods.EndDialog(new HandleRef(this, this.dialogHWnd), IntPtr.Zero);
}
throw;
}
}
Label_01CF:
return(IntPtr.Zero);
}
