nint _WndProc(wnd w, int msg, nint wParam, nint lParam)
{
//WndUtil.PrintMsg(w, msg, wParam, lParam);
switch (msg)
{
case Api.WM_NCDESTROY:
_img.Dispose();
_cursor?.Dispose();
if (_w != default)
{
_w = default;
_w.Post(Api.WM_APP);
}
break;
case Api.WM_SETCURSOR:
Api.SetCursor(_cursor.Handle);
return(1);
case Api.WM_ERASEBKGND:
return(default);
case Api.WM_PAINT:
var dc = Api.BeginPaint(w, out var ps);
_WmPaint(dc);
Api.EndPaint(w, ps);
return(default);
case Api.WM_MOUSEMOVE:
_WmMousemove(Math2.NintToPOINT(lParam));
break;
case Api.WM_LBUTTONDOWN:
_WmLbuttondown(Math2.NintToPOINT(lParam));
break;
}
return(Api.DefWindowProc(w, msg, wParam, lParam));
}
