如何设置背景图片在对话框中在VC ++ 6.0 [英] how to set background image in a dialog box in vc++6.0

问题描述

如何设置背景图片在对话框中在VC ++ 6.0

how to set background image in a dialog box in vc++6.0

推荐答案

有关MFC重载OnEraseBackground

For MFC you overload OnEraseBackground

class CMyDialog: public CDialog
{

protected:
CMyDialog::CWizardDialog(int nID);

BOOL OnEraseBkgnd(CDC* pDC);
CBitmap m_background;

};

BOOL CMyDialog::OnEraseBkgnd(CDC* pDC) 
{
CDialog::OnEraseBkgnd(pDC);	
if(!m_background.m_hObject)
	return true;

CRect rect;
GetClientRect(&rect);
CDC dc;
dc.CreateCompatibleDC(pDC);
CBitmap* pOldBitmap = dc.SelectObject(&m_background);


BITMAP bmap;
m_background.GetBitmap(&bmap);
// stretch		
pDC->StretchBlt(0, 0, rect.Width(),rect.Height(), &dc,0, 0,bmap.bmWidth,bmap.bmHeight, SRCCOPY);

// don't stretch 
//pDC->StretchBlt(0, 0, rect.Width(),rect.Height(), &dc,0, 0,rect.Width(),rect.Height(), SRCCOPY);
dc.SelectObject(pOldBitmap);

return true;
}

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