private IntPtr WindowProc(IntPtr handle, uint messageId, IntPtr wParam, IntPtr lParam)
{
try
{
switch (messageId)
{
case WinApi.WM_CLOSE:
m_logic.CloseRequest();
return(IntPtr.Zero);
case WinApi.WM_PAINT:
Render();
return(IntPtr.Zero);
case WinApi.WM_KEYDOWN:
{
var key = (Key)wParam.ToInt32();
if (m_keys[(int)key] == false)
{
m_keys[(int)key] = true;
m_logic.InputEvent(new KeyboardKeyDownEventArgs(key));
}
}
return(IntPtr.Zero);
case WinApi.WM_KEYUP:
{
var key = (Key)wParam.ToInt32();
m_keys[(int)key] = false;
m_logic.InputEvent(new KeyboardKeyUpEventArgs(key));
}
return(IntPtr.Zero);
case WinApi.WM_KILLFOCUS:
{
for (int i = 0; i < m_keys.Length; i++)
{
if (m_keys[i])
{
m_keys[i] = false;
m_logic.InputEvent(new KeyboardKeyUpEventArgs((Key)i));
}
}
}
return(IntPtr.Zero);
case WinApi.WM_LBUTTONDOWN:
OnMousedDown(MouseButton.Left, GetMousePosition(handle, lParam));
return(IntPtr.Zero);
case WinApi.WM_LBUTTONUP:
OnMouseUp(MouseButton.Left, GetMousePosition(handle, lParam));
return(IntPtr.Zero);
case WinApi.WM_RBUTTONDOWN:
OnMousedDown(MouseButton.Right, GetMousePosition(handle, lParam));
return(IntPtr.Zero);
case WinApi.WM_RBUTTONUP:
OnMouseUp(MouseButton.Right, GetMousePosition(handle, lParam));
return(IntPtr.Zero);
case WinApi.WM_MBUTTONDOWN:
OnMousedDown(MouseButton.Middle, GetMousePosition(handle, lParam));
return(IntPtr.Zero);
case WinApi.WM_MBUTTONUP:
OnMouseUp(MouseButton.Middle, GetMousePosition(handle, lParam));
return(IntPtr.Zero);
case WinApi.WM_XBUTTONDOWN:
{
var button = ((wParam.ToInt32() >> 16) & 0xFFFF) == 1 ? MouseButton.Aux1 : MouseButton.Aux2;
OnMousedDown(button, GetMousePosition(handle, lParam));
}
return(IntPtr.Zero);
case WinApi.WM_XBUTTONUP:
{
var button = ((wParam.ToInt32() >> 16) & 0xFFFF) == 1 ? MouseButton.Aux1 : MouseButton.Aux2;
OnMouseUp(button, GetMousePosition(handle, lParam));
}
return(IntPtr.Zero);
case WinApi.WM_MOUSEMOVE:
if (!m_isMouseInWindow)
{
m_isMouseInWindow = true;
var cursor = WinApi.GetClassLong(handle, WinApi.GCL_HCURSOR);
if (cursor == 0)
{
WinApi.SetCursor(IntPtr.Zero);
}
WinApi.TrackMouseEventParameters p = new WinApi.TrackMouseEventParameters();
p.cbSize = (uint)Marshal.SizeOf(typeof(WinApi.TrackMouseEventParameters));
p.dwFlags = WinApi.TME_LEAVE;
p.hwndTrack = handle;
WinApi.TrackMouseEvent(ref p);
m_logic.InputEvent(new MouseEnterEventArgs());
}
m_logic.InputEvent(new MouseMoveEventArgs(GetMousePosition(handle, lParam)));
return(IntPtr.Zero);
case WinApi.WM_MOUSELEAVE:
m_isMouseInWindow = false;
m_logic.InputEvent(new MouseLeaveEventArgs());
return(IntPtr.Zero);
case WinApi.WM_MOUSEWHEEL:
{
var ticks = (short)((wParam.ToInt32() >> 16) & 0xFFFF);
m_logic.InputEvent(new MouseWheelEventArgs(ticks / 120f, GetMousePosition(handle, lParam)));
}
return(IntPtr.Zero);
case WinApi.WM_CHAR:
{
var c = (char)(wParam.ToInt32() & 0xFFFF);
m_logic.InputEvent(new CharacterEventArgs(c));
}
return(IntPtr.Zero);
default:
return(WinApi.DefWindowProc(handle, messageId, wParam, lParam));
}
}
catch (Exception ex)
{
Engine.LogError("Unhandled exception", ex);
m_logic.UnhandledException(ex);
return(WinApi.DefWindowProc(handle, messageId, wParam, lParam));
}
}