public IntPtr Callback(IntPtr hWnd, User32.WindowMessage msg, IntPtr wparam, IntPtr lparam)
{
Debug.Assert(hWnd != IntPtr.Zero, "Windows called us with an HWND of 0");
// Set the window procedure to the default window procedure
User32.SetWindowLong(hWnd, User32.GWL.WNDPROC, _defaultWindProc);
_targetWindow.AssignHandle(hWnd);
return(_targetWindow.Callback(hWnd, msg, wparam, lparam));
}
public unsafe IntPtr SendMessage(IHandle sender, User32.WindowMessage message, BOOL state = BOOL.FALSE)
{
Info.cbSize = (uint)sizeof(TTOOLINFOW);
fixed(char *c = Text)
fixed(void *i = &Info)
{
if (Text != null)
{
Info.lpszText = c;
}
IntPtr result = User32.SendMessageW(sender, message, (IntPtr)state, (IntPtr)i);
GC.KeepAlive(_handle);
return(result);
}
}
public void ThreadContext_MultipleProcessFiltersProcesses()
{
// Test that multiple filters work
Application.ThreadContext threadContext = new Application.ThreadContext();
User32.WindowMessage filterId2 = TestMessageId2;
var mockContext2 = new Mock <IMessageFilter>(MockBehavior.Strict);
mockContext2.Setup(c => c.PreFilterMessage(ref It.Ref <Message> .IsAny))
.Returns((MessageCallback)((ref Message m) => m.Msg == (int)filterId2));
threadContext.AddMessageFilter(mockContext2.Object);
User32.WindowMessage filterId3 = TestMessageId3;
var mockContext3 = new Mock <IMessageFilter>(MockBehavior.Strict);
mockContext3.Setup(c => c.PreFilterMessage(ref It.Ref <Message> .IsAny))
.Returns((MessageCallback)((ref Message m) => m.Msg == (int)filterId3));
threadContext.AddMessageFilter(mockContext3.Object);
var msg = new User32.MSG
{
message = TestMessageId1
};
Assert.False(threadContext.PreTranslateMessage(ref msg));
mockContext2.Verify(c => c.PreFilterMessage(ref It.Ref <Message> .IsAny), Times.Exactly(1));
mockContext3.Verify(c => c.PreFilterMessage(ref It.Ref <Message> .IsAny), Times.Exactly(1));
msg = new User32.MSG
{
message = TestMessageId2
};
Assert.True(threadContext.PreTranslateMessage(ref msg));
mockContext2.Verify(c => c.PreFilterMessage(ref It.Ref <Message> .IsAny), Times.Exactly(2));
mockContext3.Verify(c => c.PreFilterMessage(ref It.Ref <Message> .IsAny), Times.Exactly(1));
msg = new User32.MSG
{
message = TestMessageId3
};
Assert.True(threadContext.PreTranslateMessage(ref msg));
mockContext2.Verify(c => c.PreFilterMessage(ref It.Ref <Message> .IsAny), Times.Exactly(3));
mockContext3.Verify(c => c.PreFilterMessage(ref It.Ref <Message> .IsAny), Times.Exactly(2));
}
public override IntPtr WndProc(
IntPtr hWnd, User32.WindowMessage msg,
IntPtr wParam, IntPtr lParam)
{
switch (msg)
{
case User32.WindowMessage.WM_PAINT:
_swap?.Present(1, PresentFlags.None);
break;
case User32.WindowMessage.WM_CLOSE:
Environment.Exit(0);
return(IntPtr.Zero);
}
return(base.WndProc(hWnd, msg, wParam, lParam));
}
public void ThreadContext_CorrectProcessFiltersProcesses()
{
// Test that a filter with the correct ID returns true
Application.ThreadContext threadContext = new Application.ThreadContext();
User32.WindowMessage filterId = TestMessageId2;
var mockContext = new Mock <IMessageFilter>(MockBehavior.Strict);
mockContext.Setup(c => c.PreFilterMessage(ref It.Ref <Message> .IsAny))
.Returns((MessageCallback)((ref Message m) => m.Msg == (int)filterId));
threadContext.AddMessageFilter(mockContext.Object);
var msg = new User32.MSG
{
message = filterId
};
Assert.True(threadContext.PreTranslateMessage(ref msg));
mockContext.Verify(c => c.PreFilterMessage(ref It.Ref <Message> .IsAny), Times.Exactly(1));
}
public void ThreadContext_WrongProcessFiltersPassesThrough()
{
// Test that a filter for the wrong ID returns false, but does get called
Application.ThreadContext threadContext = new Application.ThreadContext();
User32.WindowMessage filterId = TestMessageId2;
var mockContext = new Mock <IMessageFilter>(MockBehavior.Strict);
mockContext.Setup(c => c.PreFilterMessage(ref It.Ref <Message> .IsAny))
.Returns((MessageCallback)((ref Message m) => m.Msg == (int)filterId));
threadContext.AddMessageFilter(mockContext.Object);
var msg = new User32.MSG
{
message = TestMessageId1
};
Assert.False(threadContext.PreTranslateMessage(ref msg));
mockContext.Verify(c => c.PreFilterMessage(ref It.Ref <Message> .IsAny), Times.Exactly(1));
}
/// <summary>
/// Window message callback method. Control arrives here when a window
/// message is sent to this Window. This method packages the window message
/// in a Message object and invokes the wndProc() method. A WM_NCDESTROY
/// message automatically causes the releaseHandle() method to be called.
/// </summary>
private IntPtr Callback(IntPtr hWnd, User32.WindowMessage msg, IntPtr wparam, IntPtr lparam)
{
// Note: if you change this code be sure to change the
// corresponding code in DebuggableCallback below!
Message m = Message.Create(hWnd, msg, wparam, lparam);
try
{
if (_weakThisPtr.IsAlive && _weakThisPtr.Target != null)
{
WndProc(ref m);
}
else
{
DefWndProc(ref m);
}
}
catch (Exception e)
{
if (WndProcShouldBeDebuggable)
{
throw;
}
OnThreadException(e);
}
finally
{
if (msg == User32.WindowMessage.WM_NCDESTROY)
{
ReleaseHandle(handleValid: false);
}
if (msg == User32.RegisteredMessage.WM_UIUNSUBCLASS)
{
ReleaseHandle(handleValid: true);
}
}
return(m.Result);
}
private unsafe IntPtr NewWindowProc(IntPtr hWnd, User32.WindowMessage Msg, IntPtr wParam, IntPtr lParam)
{
switch (Msg)
{
case User32.WindowMessage.WM_SETTINGCHANGE:
case User32.WindowMessage.WM_THEMECHANGED:
HRESULT hr = UpdateTitleBarTheme();
hr.ThrowIfFailed();
break;
case User32.WindowMessage.WM_GETMINMAXINFO:
var dpi = User32.GetDpiForWindow(hWnd);
float scalingFactor = (float)dpi / 96;
//MINMAXINFO minMaxInfo = Marshal.PtrToStructure<MINMAXINFO>(lParam);
//minMaxInfo.ptMinTrackSize.x = (int)(MinWidth * scalingFactor);
//minMaxInfo.ptMinTrackSize.y = (int)(MinHeight * scalingFactor);
//Marshal.StructureToPtr(minMaxInfo, lParam, true);
break;
}
return(CallWindowProc(oldWndProc, hWnd, Msg, wParam, lParam));
}
/// <summary>
/// Initializes a new instance of the <see cref="WindowMessage"/> class.
/// </summary>
/// <param name="msg">Window Message ID</param>
/// <param name="wParam">The wParam value</param>
/// <param name="lParam">The lparam value</param>
internal WindowMessage(User32.WindowMessage msg, IntPtr wParam, IntPtr lParam)
{
this.Message = msg;
this.WParam = wParam;
this.LParam = lParam;
}
/// <summary>
/// This is the replaces Window Procedure which will be used to track all window messages,
/// and generate events.
/// </summary>
/// <param name="hWnd">The window handle.</param>
/// <param name="msg">Message ID.</param>
/// <param name="wParam">The wParam value.</param>
/// <param name="lParam">The lParam value.</param>
/// <returns>Message specific return value.</returns>
internal unsafe IntPtr HookProc(IntPtr hWnd, User32.WindowMessage msg, void* wParam, void* lParam)
{
this.WindowMessage?.Invoke(this, new WindowMessage(msg, new IntPtr(wParam), new IntPtr(lParam)));
return User32.DefWindowProc(hWnd, msg, new IntPtr(wParam), new IntPtr(lParam));
}
internal static Message Create(IntPtr hWnd, User32.WindowMessage msg, IntPtr wparam, IntPtr lparam) => Create(hWnd, (int)msg, wparam, lparam);
static extern IntPtr CallWindowProc(IntPtr lpPrevWndFunc, IntPtr hWnd, User32.WindowMessage Msg, IntPtr wParam, IntPtr lParam);
private void SendNCWinMessage(User32.WindowMessage msg, IntPtr parameter1, IntPtr parameter2)
{
Message message = Message.Create(this.Handle, (int)msg, parameter1, parameter2);
this.WndProc(ref message);
}
public WindowMessage(User32.WindowMessage message, IntPtr wParam, IntPtr lParam)
{
Message = message;
WParam = wParam;
LParam = lParam;
}
public virtual IntPtr WndProc(
IntPtr hWnd, User32.WindowMessage msg,
IntPtr wParam, IntPtr lParam)
{
return(DefWindowProc(hWnd, msg, wParam, lParam));
}
public static extern IntPtr DefWindowProc(IntPtr hWnd, User32.WindowMessage msg, IntPtr wParam, IntPtr lParam);
