怎么在rich中显示抓取到剪贴板上的图片？

yschat 2009-12-20 10:48:37

下面代码是抓图代码，并放到剪贴板上：

HBITMAP CCatchScreenDlg::CopyScreenToBitmap(LPRECT lpRect,BOOL bSave)

//lpRect 代表选定区域

{

	HDC       hScrDC, hMemDC;      

	// 屏幕和内存设备描述表

	HBITMAP    hBitmap, hOldBitmap;   

	// 位图句柄

	int       nX, nY, nX2, nY2;      

	// 选定区域坐标

	int       nWidth, nHeight;

	

	// 确保选定区域不为空矩形

	if (IsRectEmpty(lpRect))

		return NULL;

	//为屏幕创建设备描述表

	hScrDC = CreateDC("DISPLAY", NULL, NULL, NULL);



	//为屏幕设备描述表创建兼容的内存设备描述表

	hMemDC = CreateCompatibleDC(hScrDC);

	// 获得选定区域坐标

	nX = lpRect->left;

	nY = lpRect->top;

	nX2 = lpRect->right;

	nY2 = lpRect->bottom;



	//确保选定区域是可见的

	if (nX < 0)

		nX = 0;

	if (nY < 0)

		nY = 0;

	if (nX2 > m_xScreen)

		nX2 = m_xScreen;

	if (nY2 > m_yScreen)

		nY2 = m_yScreen;

	nWidth = nX2 - nX;

	nHeight = nY2 - nY;

	// 创建一个与屏幕设备描述表兼容的位图

	hBitmap = CreateCompatibleBitmap

		(hScrDC, nWidth, nHeight);

	// 把新位图选到内存设备描述表中

	hOldBitmap = (HBITMAP)SelectObject(hMemDC, hBitmap);

	// 把屏幕设备描述表拷贝到内存设备描述表中

	if(bSave)

	{

		//创建军兼容DC,当bSave为中时把开始保存的全屏位图,按截取矩形大小保存

		CDC dcCompatible;

		dcCompatible.CreateCompatibleDC(CDC::FromHandle(hMemDC));

		dcCompatible.SelectObject(m_pBitmap);

        

		BitBlt(hMemDC, 0, 0, nWidth, nHeight,

			dcCompatible, nX, nY, SRCCOPY);



	}

	else

	{

		BitBlt(hMemDC, 0, 0, nWidth, nHeight,

			hScrDC, nX, nY, SRCCOPY);

	}



	hBitmap = (HBITMAP)SelectObject(hMemDC, hOldBitmap);

	//得到屏幕位图的句柄

	//清除 

	DeleteDC(hScrDC);

	DeleteDC(hMemDC);

	

	if(bSave)

	{

				

		if (OpenClipboard()) 

		{

        //清空剪贴板

        EmptyClipboard();

        //把屏幕内容粘贴到剪贴板上,

        //hBitmap 为刚才的屏幕位图句柄

        SetClipboardData(CF_BITMAP, hBitmap);

        //关闭剪贴板

        CloseClipboard();

      }

	}

	// 返回位图句柄



	return hBitmap;

}