public static DisposableHandle GetDisposableHdc(this Graphics graphics)
{
var handle = new DisposableHandle(graphics.GetHdc());
handle.Disposed += (sender, e) => graphics.ReleaseHdc();
return(handle);
}
public static DisposableHandle SelectObject(this DisposableHandle graphicsHandle, IntPtr gdiObject)
{
var hdc = graphicsHandle;
var oldObject = SelectObject((IntPtr)hdc, gdiObject);
var disposableHandle = new DisposableHandle(oldObject);
disposableHandle.Disposed += (sender, e) =>
{
SelectObject(hdc, oldObject);
DeleteObject(gdiObject);
};
return(disposableHandle);
}
public static DisposableHandle SelectObject(this Graphics graphics, IntPtr gdiObject)
{
var hdc = graphics.GetDisposableHdc();
var oldObject = SelectObject(hdc, gdiObject);
var disposableHandle = new DisposableHandle(oldObject);
disposableHandle.Disposed += (sender, e) =>
{
SelectObject(hdc, oldObject);
DeleteObject(gdiObject);
hdc.Dispose();
};
return(disposableHandle);
}
public static DisposableHandle SelectObject(this DisposableHandle graphicsHandle, Font font)
{
var hFont = font.ToHfont();
return(graphicsHandle.SelectObject(hFont));
}
