public static System.Drawing.Point ScreenToClient(IntPtr hwnd, System.Drawing.Point p)
{
APIPOINT p2 = new APIPOINT();
p2.x = p.X;
p2.y = p.Y;
if (ScreenToClient(hwnd, ref p2))
{
return(new System.Drawing.Point(p2.x, p2.y));
}
else
{
return(System.Drawing.Point.Empty);
}
}
public static System.Drawing.Point GetScreenMousePosition(System.Windows.Forms.Message msg)
{
if (msg.Msg == WM_MOUSEMOVE ||
msg.Msg == WM_LBUTTONDBLCLK ||
msg.Msg == WM_LBUTTONDOWN ||
msg.Msg == WM_LBUTTONUP ||
msg.Msg == WM_RBUTTONDBLCLK ||
msg.Msg == WM_RBUTTONDOWN ||
msg.Msg == WM_RBUTTONUP)
{
APIPOINT p = new APIPOINT();
p.x = GetX(msg.LParam.ToInt32());
p.y = GetY(msg.LParam.ToInt32());
ClientToScreen(msg.HWnd, ref p);
return(new System.Drawing.Point(p.x, p.y));
}
else
{
return(GetPoint(msg.LParam.ToInt32()));
}
}
private static extern bool DragDetect(System.IntPtr hWnd, APIPOINT pt);
private static extern bool ScreenToClient(IntPtr hwnd, ref APIPOINT pt);
private static extern bool ClientToScreen(IntPtr hwnd, ref APIPOINT pt);