public BufferedPaintHandle(IWin32Window wnd, SafeDCHandle hdc, Rectangle targetRectangle,
BufferedPaintAnimationParams?animationParams = null,
BufferedPaintParams paintParams = null, BufferedPaintBufferFormat fmt = BufferedPaintBufferFormat.CompatibleBitmap)
: base(IntPtr.Zero, true)
{
RECT rc = targetRectangle;
var ap = animationParams ?? BufferedPaintAnimationParams.Empty;
IntPtr hdcFrom, hdcTo;
var hbp = BeginBufferedAnimation(new HandleRef(wnd, wnd.Handle), hdc, ref rc, fmt, paintParams, ref ap, out hdcFrom,
out hdcTo);
if (hbp == IntPtr.Zero)
{
throw new Win32Exception();
}
if (hdcFrom != IntPtr.Zero)
{
SourceGraphics = Graphics.FromHdc(hdcFrom);
}
if (hdcTo != IntPtr.Zero)
{
Graphics = Graphics.FromHdc(hdcTo);
}
SetHandle(hbp);
ani = true;
}
public BufferedPaintHandle(SafeDCHandle hdc, Rectangle targetRectangle, BufferedPaintParams paintParams = null,
BufferedPaintBufferFormat fmt = BufferedPaintBufferFormat.CompatibleBitmap) : base(IntPtr.Zero, true)
{
RECT target = targetRectangle;
var hbp = BeginBufferedPaint(hdc, ref target, fmt, paintParams, out var phdc);
if (hbp == IntPtr.Zero)
{
throw new Win32Exception();
}
if (phdc != IntPtr.Zero)
{
Graphics = Graphics.FromHdc(phdc);
}
SetHandle(hbp);
}
public static extern IntPtr BeginBufferedPaint(SafeDCHandle hdcTarget, [In] ref RECT prcTarget, BufferedPaintBufferFormat dwFormat, [In] BufferedPaintParams pPaintParams, out IntPtr phdc);
public static extern IntPtr BeginBufferedAnimation(HandleRef hwnd, SafeDCHandle hdcTarget, [In] ref RECT rcTarget, BufferedPaintBufferFormat dwFormat,
[In] BufferedPaintParams pPaintParams, [In] ref BufferedPaintAnimationParams pAnimationParams, out IntPtr phdcFrom, out IntPtr phdcTo);
