private static bool HandleMouseEvent(NativeMouseEvent eventCode, MousePosition pos, int wheelDelta)
{
switch (eventCode)
{
case NativeMouseEvent.WM_MOUSEMOVE:
OnMouseMove?.Invoke(pos);
return(true);
case NativeMouseEvent.WM_LBUTTONDOWN:
OnMouseLeftDown?.Invoke(pos);
return(true);
case NativeMouseEvent.WM_LBUTTONUP:
OnMouseLeftUp?.Invoke(pos);
return(true);
case NativeMouseEvent.WM_RBUTTONDOWN:
OnMouseRightDown?.Invoke(pos);
return(true);
case NativeMouseEvent.WM_RBUTTONUP:
OnMouseRightUp?.Invoke(pos);
return(true);
case NativeMouseEvent.WM_MOUSEWHEEL:
OnMouseWheel?.Invoke(pos, wheelDelta);
return(true);
default:
return(false);
}
}
LRESULT WndProc(HWND hwnd, WM msg, WPARAM wParam, LPARAM lParam)
{
switch (msg)
{
case WM.CLOSE:
OnClose?.Invoke();
if (DestroyWhenClose == null || DestroyWhenClose())
{
User32.DestroyWindow(hwnd);
}
return(0);
case WM.ENABLE:
OnEnable?.Invoke(wParam);
break;
case WM.SHOWWINDOW:
OnShow?.Invoke(wParam);
break;
case WM.DESTROY:
OnDestroy?.Invoke();
return(0);
case WM.MOUSEMOVE:
OnMouseMove?.Invoke(lParam.LowWord, lParam.HiWord);
return(0);
case WM.LBUTTONDOWN:
OnMouseLeftDown?.Invoke(lParam.LowWord, lParam.HiWord);
return(0);
case WM.LBUTTONUP:
OnMouseLeftUp?.Invoke(lParam.LowWord, lParam.HiWord);
return(0);
case WM.LBUTTONDBLCLK:
OnMouseLeftDoubleClicked?.Invoke();
return(0);
case WM.RBUTTONDOWN:
OnMouseRightDown?.Invoke(lParam.LowWord, lParam.HiWord);
return(0);
case WM.RBUTTONUP:
OnMouseRightUp?.Invoke(lParam.LowWord, lParam.HiWord);
return(0);
case WM.MBUTTONDOWN:
OnMouseMiddleDown?.Invoke(lParam.LowWord, lParam.HiWord);
return(0);
case WM.MBUTTONUP:
OnMouseMiddleUp?.Invoke(lParam.LowWord, lParam.HiWord);
return(0);
case WM.MOUSEWHEEL:
OnMouseWheel?.Invoke(wParam.HiWord);
return(0);
case WM.RESIZE:
OnResize?.Invoke(lParam.LowWord, lParam.HiWord);
return(0);
case WM.PAINT:
{
var ps = default(PAINTSTRUCT);
User32.BeginPaint(hwnd, ref ps);
OnPaint?.Invoke();
User32.EndPaint(hwnd, ref ps);
}
return(0);
}
return(User32.DefWindowProcW(hwnd, msg, wParam, lParam));
}