private void CreateMagnifier()
{
if (!this.isInitialized)
{
return;
}
IntPtr hInst = Kernel32.GetModuleHandle(null);
this.form.AllowTransparency = true;
this.form.TransparencyKey = Color.Empty;
this.form.Opacity = 0;
User32.GetClientRect(this.form.Handle, ref this.magnificatorWindowRect);
this.hwndMagnificator = User32.CreateWindow(
0,
Magnification.WC_MAGNIFIER,
"MagnifierWindow",
(int)WinUser.WS_VISIBLE | (int)WinUser.WS_CHILD | (int)Magnification.MagnifierStyle.MS_SHOWMAGNIFIEDCURSOR,
this.magnificatorWindowRect.left,
this.magnificatorWindowRect.top,
this.magnificatorWindowRect.right,
this.magnificatorWindowRect.bottom,
this.form.Handle,
IntPtr.Zero,
hInst,
IntPtr.Zero
);
if (this.hwndMagnificator == IntPtr.Zero)
{
return;
}
Magnification.Transformation matrix = new Magnification.Transformation(this.magnificationFactor);
Magnification.MagSetWindowTransform(this.hwndMagnificator, ref matrix);
}
public static extern bool MagSetWindowTransform(IntPtr hwnd, ref Magnification.Transformation pTransform);