VC保存文件的问题

[dceacho]

void CMainFrame::OnFileSaveAs()
{
// TODO: Add your command handler code here
该怎么写
}
工程是以个单文档窗口,我需要用自己的程序void SaveBmp()保存窗口中显示的图片
void CWeiDraw1View::SaveBmp()
{
//--------------test------------------------------
BITMAPINFO bi;//信息头
void *pBits=NULL;
// CRect rect;//客户区窗口
// GetClientRect(&rect);//默认拷贝区域为客户区大小，可以自行修改rect大小
int nWidth=m_nMaxX;
int nHeight=m_nMaxY;
//填充信息头
ZeroMemory(&bi,sizeof(bi));
bi.bmiHeader.biSize=sizeof(bi.bmiHeader);
bi.bmiHeader.biHeight=nHeight;
bi.bmiHeader.biWidth=nWidth;
bi.bmiHeader.biPlanes=1;
bi.bmiHeader.biBitCount=24;
bi.bmiHeader.biCompression=BI_RGB;
bi.bmiHeader.biSizeImage=3*nWidth*nHeight;

//拷贝客户区至内存DC
// HDC hActiveDC=::GetDC(this->m_hWnd);
HDC hActiveDC=m_pMemDC->GetSafeHdc();
HDC hActiveWndCompatibleDC=CreateCompatibleDC(hActiveDC);
// HBITMAP hActiveWndCompactibleBitmap=CreateCompatibleBitmap(hActiveDC,rect.right,rect.bottom);
HBITMAP hActiveWndCompactibleBitmap=CreateCompatibleBitmap(hActiveDC,m_nMaxX,m_nMaxY);
SelectObject(hActiveWndCompatibleDC,hActiveWndCompactibleBitmap);

// BitBlt(hActiveWndCompatibleDC,0,0,rect.right,rect.bottom,hActiveDC,0,0,SRCCOPY);
BitBlt(hActiveWndCompatibleDC,0,0,m_nMaxX,m_nMaxY,hActiveDC,0,0,SRCCOPY);
//保存内存DC
HDC hBmpFileDC=CreateCompatibleDC(hActiveWndCompatibleDC);
HBITMAP hBmpFileBitmap=CreateDIBSection(hActiveWndCompatibleDC,&bi,DIB_RGB_COLORS,&pBits,NULL,0);
SelectObject(hBmpFileDC,hBmpFileBitmap);
BitBlt(hBmpFileDC,0,0,nWidth,nHeight,hActiveWndCompatibleDC,0,0,SRCCOPY);

CString tempFileName=_T("f://test.bmp");//目标文件名
HANDLE hFile=CreateFile(tempFileName,GENERIC_WRITE,FILE_SHARE_WRITE,NULL,CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL,NULL);
if(hFile!=INVALID_HANDLE_VALUE)
{
DWORD dwRet=0;
//填充文件头
BITMAPFILEHEADER bmfHeader;
ZeroMemory(&bmfHeader,sizeof(bmfHeader));
bmfHeader.bfOffBits=sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER);
bmfHeader.bfSize=bi.bmiHeader.biSizeImage+bmfHeader.bfOffBits;
bmfHeader.bfType='MB';
WriteFile(hFile,&bmfHeader,sizeof(bmfHeader),&dwRet,NULL);
WriteFile(hFile,&bi.bmiHeader,sizeof(bi.bmiHeader),&dwRet,NULL);
WriteFile(hFile,pBits,bi.bmiHeader.biSizeImage,&dwRet,NULL);
CloseHandle(hFile);
}

//------------------------
}
现在我在ID_FILE_SAVE_AS的事件该怎么写才能得到用户指定的路径及文件名然后调用SaveBmp保存

[珍惜生命远离CPP]

自己用CFileDialog弹出保存的对话框,这样不就知道保存的地址了么

[liliangbao]

[Quote=引用 1 楼 akirya 的回复:]
自己用CFileDialog弹出保存的对话框,这样不就知道保存的地址了么
[/Quote]
up

[jame2001]

     CString strSaveFileType = "位图文件 (*.bmp;*.dib)|*.bmp";   
     CFileDialog FileDlg(FALSE, "*.bmp", NULL, OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT, strSaveFileType);   
    
     CFile fileOpen ;   
     if( FileDlg.DoModal() == IDOK ) {   
         if(!fileOpen.Open( FileDlg.GetPathName() , CFile::modeCreate|CFile::modeWrite )){   
             AfxMessageBox("cannot create the file to save");   
             return;   
         }   
         fileOpen.Close();   
         SaveBmp(FileDlg.GetPathName());  
     } 
void CWeiDraw1View::SaveBmp(CString FileName) 
{
}  

[dceacho]

谢谢楼上的几位特别三楼,发分了

[捕鲸叉]

单文档模式，为什么不用CDocument缺省的实现？