/// <summary>
/// Creates a new <see cref="GraphicsEx"/> object from the specified <see cref="Control"/> object.
/// </summary>
/// <param name="ctl"><see cref="Control"/> object</param>
/// <returns>This method returns a new OpenNETCF.Drawing.GraphicsEx object for the specified specified Control object.</returns>
public static GraphicsEx FromControl(Control ctl)
{
IntPtr hwnd = GetControlHandle(ctl);
GraphicsEx gx = FromHwnd(hwnd);
GDIPlus.GetWindowRect(hwnd, ref gx.rect);
return(gx);
}
/// <summary>
/// Creates a new copy of <see cref="GraphicsEx"/> object from the specified Control object.
/// </summary>
/// <param name="ctl"><see cref="Control"/> object.</param>
/// <returns>This method returns a new <see cref="GraphicsEx"/> object for the specified specified Control object.</returns>
public static GraphicsEx CompatibleGraphics(Control ctl)
{
IntPtr hwnd = GetControlHandle(ctl);
IntPtr hdc = GDIPlus.GetDC(hwnd);
IntPtr hDCCopy = GDIPlus.CreateCompatibleDC(hdc);
GraphicsEx gx = FromHdc(hDCCopy);
GDIPlus.ReleaseDC(hwnd, hdc);
gx.bCopy = true;
return(gx);
}
/// <summary>
/// Creates a new copy of <see cref="GraphicsEx"/> object from the existing <see cref="GraphicsEx"/> objec.
/// </summary>
/// <returns></returns>
public GraphicsEx CompatibleGraphics()
{
IntPtr hDCCopy = GDIPlus.CreateCompatibleDC(this.hDC);
IntPtr hBmpMem = GDIPlus.CreateCompatibleBitmap(this.hDC, this.rect.right - this.rect.left, this.rect.bottom - this.rect.top);
GDIPlus.SelectObject(hDCCopy, hBmpMem);
GraphicsEx gx = FromHdc(hDCCopy);
gx.bCopy = true;
return(gx);
}
/// <summary>
/// Creates a new <see cref="GraphicsEx"/> object from the specified handle to a window.
/// </summary>
/// <param name="hwnd">Handle to a window.</param>
/// <returns>This method returns a new <see cref="GraphicsEx"/> object for the specified window handle. </returns>
public static GraphicsEx FromHwnd(IntPtr hwnd)
{
//GraphicsEx gx = null;
IntPtr hdc = GDIPlus.GetDC(hwnd);
GraphicsEx gx = FromHdc(hdc);
gx.hwnd = hwnd;
return(gx);
}
/// <summary>
/// Creates a new <see cref="GraphicsEx"/> object from the specified native graphics handle.
/// </summary>
/// <param name="nativeGraphics">native graphics handle.</param>
public static GraphicsEx FromHdc(IntPtr nativeGraphics)
{
GraphicsEx gx = null;
if (nativeGraphics != IntPtr.Zero)
{
gx = new GraphicsEx(nativeGraphics);
}
else
{
return(null);
}
return(gx);
}
/// <summary>
/// Copies the graphics.
/// </summary>
/// <param name="gx"></param>
/// <param name="rc"></param>
public void CopyGraphics(GraphicsEx gx, Rectangle rc)
{
int ret = GDIPlus.BitBlt(hDC, rc.Left, rc.Top, rc.Width, rc.Height, gx.hDC, 0, 0, GDIPlus.SRCCOPY);
}
