作者:水_-晶_522 | 来源:互联网 | 2023-08-08 12:23
在打印时,如何通过编程决定是横向打印还是纵向打印?我不想通过打印对话框来选择,我看了CPrintDialog类的成员,没有查到相关的函数。如何解决这个问题,谢谢!
在打印时,如何通过编程决定是横向打印还是纵向打印?
我不想通过打印对话框来选择,我看了CPrintDialog类的成员,没有查到相关的函数。
如何解决这个问题,
谢谢!
6 个解决方案
可以使用DocumentProperties函数
long lRet = 0;
lRet = DocumentProperties(NULL, hPrinter, printer, NULL, NULL, 0);
pDevMode = (PDEVMODE) new BYTE[lRet];
lRet = ::DocumentProperties(NULL, hPrinter ,printer,
pDevMode, pDevMode, DM_OUT_BUFFER );
//设置打印属性 横向或纵向 (DMORIENT_PORTRAIT)
pDevMode->dmOrientation = DMORIENT_LANDSCAPE ;
lRet = ::DocumentProperties(NULL, hPrinter, printer,
pDevMode,pDevMode, DM_IN_BUFFER|DM_OUT_BUFFER );
//构造打印dc
HDC hdcPrinter = ::CreateDC("WINSPOOL", printer ,NULL, pDevMode);
...
然后使用hdcPrinter进行打印
我跟踪CWinApp::OnFilePrintSetup();
结果如下
void CTempApp::OnFilePrintSetup()
{
// TODO: Add your command handler code here
//CWinApp::OnFilePrintSetup();
CPrintDialog pd(TRUE);
pd.m_pd.hDevMode = m_hDevMode;
if(pd.DoModal()==IDOK)
m_hDevMode=pd.m_pd.hDevMode;
}
这里m_hDevMode是CWinApp类的protected成员
HGLOBAL m_hDevMode; // printer Dev Mode
用来控制横向和纵向预览打印的,
但是不知道怎么用代码付值哦
帮你顶一下吧
这个问题已解决:
DEVMODE这个结构中的一个成员dmOrientation决定是横向打印(DMORIENT_LANDSCAPE)还是纵向打印(DMORIENT_PORTRAIT)。
具体代码实现如下:
void CAnalyzeDlg::Print(HDC hMemDC, LPRECT lpRect)
{
HDC hPrintDC;
DOCINFO docInfo;
CPrintDialog printDlg(FALSE);
if(printDlg.DoModal()!=IDOK) return;
hPrintDC=printDlg.GetPrinterDC();
LPDEVMODE lpDevMode=(LPDEVMODE)GlobalLock(printDlg.m_pd.hDevMode);
if(lpDevMode){
lpDevMode->dmPaperSize=DMPAPER_A4; //将打印纸设置为A4
// lpDevMode->dmOrientation=DMORIENT_LANDSCAPE; //将打印机设置为横向打印。
lpDevMode->dmPrintQuality=DMRES_MEDIUM; //打印分辨率为600dpi
ResetDC(hPrintDC,lpDevMode);
}else{
DeleteDC(hPrintDC);
return;
}
memset(&docInfo,0,sizeof(docInfo));
docInfo.cbSize=sizeof(DOCINFO);
docInfo.lpszDocName="统计报表窗口打印";
if(StartDoc(hPrintDC,&docInfo)<=0){
DeleteDC(hPrintDC);
return;
}
StartPage(hPrintDC);
SetMapMode(hPrintDC,MM_LOMETRIC); //logic unit:0.1mm
int x,y,w,h;
if(lpDevMode->dmOrientation==DMORIENT_LANDSCAPE){//横向打印
w=2670;
h=1850; // 267mm×185mm
x=(lpDevMode->dmPaperLength-w)/2;
y=(lpDevMode->dmPaperWidth-h)/2-50;
}else if(lpDevMode->dmOrientation==DMORIENT_PORTRAIT){//纵向打印
w=1850;
h=1335; // 185mm×133.5mm
x=(lpDevMode->dmPaperWidth-w)/2;
y=(lpDevMode->dmPaperLength-2*h)/2-50;
}
::StretchBlt(hPrintDC,x,-y,w,-h,// Destination
hMemDC,0,0,lpRect->right-lpRect->left,lpRect->bottom-lpRect->top, //Source
SRCCOPY);
GlobalUnlock(printDlg.m_pd.hDevMode);
EndPage(hPrintDC);
EndDoc(hPrintDC);
DeleteDC(hPrintDC);
}