PrintWindow截图

PC_9527 2011-01-25 01:38:32

一个子类化的Picture控件,用于显示不断变更的图像，父窗口是对话框，由于图像比较大，有一部分图像会被遮挡，可以用PrintWindow把完整图像截出来吗？

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Dxy1239310216 2013-08-13

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可不可以实现后台找色

yidaonaxia 2011-09-05

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高，真在找这方面的资料

hqdvista 2011-02-08

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其实不明白楼主什么意思。。。

schlafenhamster 2011-01-26

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参考：



// 

void CScrollBitmapDlg::CopyPictures(HWND hWnd,CPoint point) 

{// TODO: Add your message handler code here

	UINT ID=::GetDlgCtrlID(hWnd);

//	afxDump << ID << " ID\n";

// size

	CRect rc;

	if(hWnd==0)

	{

		ID=0;

		GetWindowRect(&rc);// the dialog

	}

	else

	{

		::GetWindowRect(hWnd,&rc);

	}

// create dc

	CClientDC dc(this);

	CDC dcMem;

	dcMem.CreateCompatibleDC(&dc);

// create empty bmp

	HBITMAP bmp=CreateCompatibleBitmap(dc /* not dcMem */, rc.Width(),rc.Height());

	dcMem.SelectObject(bmp);

//

	CString prompt;

	switch (ID)

	{

	case IDOK:// "Exit"

		m_Ok.SendMessage(WM_PAINT,(WPARAM)dcMem.m_hDC,0);

		prompt="\"Exit\" button has been copied to clipbroad!";

	break;

	case IDC_SCROLLBAR1:// "H bar"

		m_hBar.SendMessage(WM_PAINT,(WPARAM)dcMem.m_hDC,0);

		prompt="\"Horizontal\" scrollbar has been copied to clipbroad!";

	break;

	case IDC_SCROLLBAR2:// "V bar"

		m_vBar.SendMessage(WM_PAINT,(WPARAM)dcMem.m_hDC,0);

		prompt="\"Vertical\" scrollbar has been copied to clipbroad!";

	break;

	case IDC_SHOW:// "Open"

		m_Open.SendMessage(WM_PAINT,(WPARAM)dcMem.m_hDC,0);

		prompt="\"Open\" button has been copied to clipbroad!";

	break;

	case IDC_PICTURE:// m_Pic

		OnMyPaint((WPARAM)dcMem.m_hDC,0);

		prompt="\"CStatic Picture\" has been copied to clipbroad!";

	break;

	case 0:// the dialog

		this->SendMessage(WM_PRINT,(WPARAM)dcMem.m_hDC,

				(LPARAM)(PRF_NONCLIENT | PRF_CHILDREN | PRF_CLIENT | PRF_ERASEBKGND | PRF_OWNED));

		prompt="\"The whole dialog\" has been copied to clipbroad!";

	break;

	}

// move bmp to clipboard

	CBitmap *pbmp=dcMem.GetCurrentBitmap();

	OpenClipboard();

	EmptyClipboard();

	SetClipboardData(CF_BITMAP,pbmp->GetSafeHandle());

    CloseClipboard();

//

	DeleteObject(bmp);

//

	AfxMessageBox(prompt);

}