private static IntPtr WindowProc(IntPtr hwnd, uint umsg,
IntPtr wParam, IntPtr lParam)
{
var msg = (WM)umsg;
switch (msg)
{
case WM.ERASEBKGND:
return(new IntPtr(1));
case WM.CLOSE:
{
User32Methods.PostQuitMessage(0);
break;
}
case WM.PAINT:
{
PaintStruct ps;
var hdc = User32Methods.BeginPaint(hwnd, out ps);
User32Methods.FillRect(hdc, ref ps.PaintRect,
Gdi32Helpers.GetStockObject(StockObject.WHITE_BRUSH));
User32Methods.EndPaint(hwnd, ref ps);
break;
}
}
return(User32Methods.DefWindowProc(hwnd, umsg, wParam, lParam));
}
protected override void OnPaint(ref PaintPacket packet)
{
PaintStruct ps;
var hdc = this.BeginPaint(out ps);
User32Methods.FillRect(hdc, ref ps.PaintRect,
Gdi32Helpers.GetStockObject(StockObject.WHITE_BRUSH));
this.EndPaint(ref ps);
base.OnPaint(ref packet);
}
static int Main(string[] args)
{
try
{
ApplicationHelpers.SetupDefaultExceptionHandlers();
Gl.Initialize();
var factory = WindowFactory.Create(hBgBrush: Gdi32Helpers.GetStockObject(StockObject.BLACK_BRUSH));
using (var win = Window.Create <AppWindow>(factory: factory, text: "Hello"))
{
win.Show();
return(new EventLoop().Run(win));
}
}
catch (Exception ex)
{
MessageBoxHelpers.ShowError(ex);
return(1);
}
}
private static IntPtr WindowProc(IntPtr hwnd, uint umsg, IntPtr wParam, IntPtr lParam)
{
IntPtr result = IntPtr.Zero;
var msg = (WM)umsg;
switch (msg)
{
case WM.ERASEBKGND:
return(new IntPtr(1));
case WM.CLOSE: User32Methods.PostQuitMessage(0);
break;
case WM.PAINT:
{
var hdc = User32Methods.BeginPaint(hwnd, out PaintStruct ps);
User32Methods.FillRect(hdc, ref ps.PaintRect,
Gdi32Helpers.GetStockObject(StockObject.WHITE_BRUSH));
User32Methods.EndPaint(hwnd, ref ps);
break;
}
case WM.KEYDOWN: InputManager.Instance.KeyPressed((VirtualKey)wParam.ToInt32(), lParam.ToInt32() & 0x40000000);
break;
case WM.KEYUP: InputManager.Instance.KeyReleased((VirtualKey)wParam.ToInt32());
break;
case WM.CHAR: InputManager.Instance.KeyTyped((char)wParam.ToInt32());
break;
case WM.MOUSEMOVE:
{
int x = unchecked ((short)(long)lParam);
int y = unchecked ((short)((long)lParam >> 16));
InputManager.Instance.MouseMoved(x, y);
break;
}
case WM.LBUTTONDOWN:
{
int x = unchecked ((short)(long)lParam);
int y = unchecked ((short)((long)lParam >> 16));
InputManager.Instance.MousePressed(MouseButton.Left, x, y);
break;
}
case WM.LBUTTONUP:
{
int x = unchecked ((short)(long)lParam);
int y = unchecked ((short)((long)lParam >> 16));
InputManager.Instance.MouseReleased(MouseButton.Left, x, y);
break;
}
case WM.RBUTTONDOWN:
{
int x = unchecked ((short)(long)lParam);
int y = unchecked ((short)((long)lParam >> 16));
InputManager.Instance.MousePressed(MouseButton.Right, x, y);
break;
}
case WM.RBUTTONUP:
{
int x = unchecked ((short)(long)lParam);
int y = unchecked ((short)((long)lParam >> 16));
InputManager.Instance.MouseReleased(MouseButton.Right, x, y);
break;
}
default:
result = User32Methods.DefWindowProc(hwnd, umsg, wParam, lParam);
break;
}
return(result);
}