Why is startdoc not succeeding?

Question

1.00/5 (2 votes)

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I am using GDI to write a document printing program or my application, but StartDoc is not succeeding. What could be wrong.

The relevant codes are shown below:

C++

case IDM_FILE_PRINT:
        {


 //Invoke Print commn dialog
            pd.lStructSize = sizeof(PRINTDLG);
            pd.hwndOwner = hWnd;
            pd.hDevMode = NULL;
            pd.hDevNames = NULL;
            pd.hDC = NULL;
            pd.Flags = PD_ALLPAGES | PD_COLLATE | PD_RETURNDC | PD_PAGENUMS | PD_CURRENTPAGE | PD_NOSELECTION;
            pd.nFromPage = 0xFFFF;
            pd.nToPage = 0xFFFF;
            pd.nMinPage = 1;
            pd.nMaxPage = 0xFFFF;
            pd.nCopies = 1;
            pd.hInstance = 0;
            pd.lCustData = 0L;
            pd.lpfnPrintHook = NULL;
            pd.lpfnSetupHook = NULL;
            pd.lpPrintTemplateName = NULL;
            pd.lpSetupTemplateName = NULL;
            pd.hPrintTemplate = NULL;
            pd.hSetupTemplate = NULL;

            if (!PrintDlg(&pd))
            {
                string ststJobName = utf8_encode(wstJobName);

                pair<wstring, wstring> err = GetAppErrMessage(ststJobName);
                XMessageBox(hWnd, err.first.c_str(), err.second.c_str(), MB_OK);

                break;
            }

            b bUserAbort = false;

            tuple Tuple = GetAppDocumentSize(hWnd, pd.hDC, printData.m_iPaperWidth, printData.m_iPaperHeight, eResultActionType);
            printData.m_dOneMMX = get<0>(Tuple);
            printData.m_dOneMMY = get<1>(Tuple);
            printData.m_iOffsetX = get<2>(Tuple);
            printData.m_iOffsetY = get<3>(Tuple);
            printData.m_hWnd = hWnd;
            printData.m_iTerm = iResultTerm;
            printData.m_eWriteType = eWriteType;
            printData.m_eResultActionType = eResultActionType;
            printData.m_eResultSheetActionType = eResultSheetActionType;
            printData.m_eBroadSheetActionType = eBroadSheetActionType;
            printData.m_pbUserAbort = &bUserAbort;
            printData.m_hDlgPrint = hDlgPrint;
            printData.m_pPd = &pd;

            printData.m_hDlgPrint = CreateDialog(hInst, MAKEINTRESOURCE(IDD_PRINT_ABORT), hWnd, PrintDlgProc);
            ShowWindow(printData.m_hDlgPrint, SW_SHOW);
            
            SetAbortProc(printData.m_pPd->hDC, (ABORTPROC)AbortProc);


if (LoadUserBroadSheetType(eBroadSheetType))
                    {
                        printData.m_pvClassResult = &vClassResult;
                        printData.m_eBroadSheetType = eBroadSheetType;
                        printData.m_stJobName = vPrintJobName[static_cast<int>(PrintJobName::PJN_BROADSHEET)];

                        _beginthread(PrintBroadSheet, 0, static_cast<void*>(&printData));
                    }

C++

void PrintBroadSheet(void* pData)
{
	PrintData* pPrintData = reinterpret_cast<PrintData*>(pData);
	
	PrintBroadSheet(pPrintData->m_hWnd,*(pPrintData->m_pvClassResult), pPrintData->m_iTerm, pPrintData->m_eWriteType, pPrintData->m_eResultActionType, pPrintData->m_eBroadSheetActionType, pPrintData->m_eBroadSheetType, pPrintData->m_pbUserAbort, pPrintData->m_hDlgPrint, pPrintData->m_stJobName, *(pPrintData->m_pPd), pPrintData->m_dOneMMX, pPrintData->m_dOneMMY, pPrintData->m_iOffsetX, pPrintData->m_iOffsetY, pPrintData->m_iPaperWidth, pPrintData->m_iPaperHeight);
	
	_endthread();
}

C++

struct PrintData
{
	HWND m_hWnd{};
	std::vector<classresult> *m_pvClassResult{};
	ClassResult *m_pclassResult{};
	int m_iTerm{};
	WriteType m_eWriteType = WriteType::WT_PRINTER;
	ResultActionType m_eResultActionType = ResultActionType::RAT_VIEW_BROADSHEET;
	ResultSheetActionType m_eResultSheetActionType = ResultSheetActionType::RSAT_VIEW_TERMINAL_RESULTSHEET;
	BroadSheetActionType m_eBroadSheetActionType = BroadSheetActionType::BAT_VIEW_TERMINAL_BROADSHEET;
	ResultsType m_eResultsType = ResultsType::RST_SHOW_PREVIOUS;
	BroadSheetTypes m_eBroadSheetType = BroadSheetTypes::BST_SHOW_DETAILS;

	bool *m_pbUserAbort{};
	HWND m_hDlgPrint{};

	PRINTDLG* m_pPd{};
	
	std::string m_stJobName;
////some missing codes

}

C++

INT PrintBroadSheet(HWND hWnd,std::vector<ClassResult>& vClassResult, int iTerm, WriteType eWriteType, ResultActionType eResultActionType, BroadSheetActionType eBroadSheetActionType, BroadSheetTypes eBroadSheetType, bool *pbUserAbort, HWND hDlgPrint, std::string stJobName, PRINTDLG &pd,double dOneMMX, double dOneMMY, int iOffsetX, int iOffsetY, int iPageWidth, int iPageHeight)
{
	bool bSuccess = true;

	std::wstring wstJobName = utf8_decode(stJobName);

	static DOCINFO di;
	di.cbSize = sizeof(DOCINFO);
	di.lpszDocName = wstJobName.c_str();
	di.fwType = 0;
	di.lpszDatatype = nullptr;
	di.lpszOutput = nullptr;
	
	//Start document;
	if (StartDoc(pd.hDC, &di) > 0)
	{
		//some missing codes
	}
	else
	{
		bSuccess = false;
	}

	if (bSuccess)
	{
		EndDoc(pd.hDC);
	}

	if(!*pbUserAbort)
	{
		DestroyWindow(hDlgPrint);
	}


	DeleteDC(pd.hDC);

	return bSuccess && !*pbUserAbort;

}<small></small>

What I have tried:

I have been googling all day but has not gotten an result yet.

Posted 4-Apr-24 8:46am

Gbenbam

Updated 4-Apr-24 8:56am

v2

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Comments

Richard MacCutchan 5-Apr-24 3:56am

What do you mean by "StartDoc is not succeeding"?

Gbenbam 5-Apr-24 4:01am

It returns a value less than 1. It never accesses the missing codes.

Richard MacCutchan 5-Apr-24 4:34am

Well that does not really tell us anything useful. Did you try calling GetLastError to see if that gives any reason for the failure? Have you checked that all parameters in your DOCINFO structure are valid?

Gbenbam 5-Apr-24 5:32am

All parameters in the he DOCINFO structure are valid. The code were I set their value is already posted above. If you wish, you may check it to see if their is something I did wrong but did not notice.

I check GetLastError to see what it will return.

Richard MacCutchan 5-Apr-24 7:21am

Have you checked that your utf8_decode function returns a valid Unicode string?

Gbenbam 5-Apr-24 12:31pm

Yes the function returns valid Unicode string.

Richard MacCutchan 5-Apr-24 12:32pm

Then I am afraid you will have to use the debugger to find out what is happening.

Gbenbam 6-Apr-24 13:33pm

It turned that the failure is due to DOCINFO structure rejecting the string wstJobName. I replaced it with a literal and the code worked.

Gbenbam 6-Apr-24 14:06pm

Thank you for your assistance. The code is now working properly.

Gbenbam 5-Apr-24 12:33pm

I'll give another thorough look though.

1 solution

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Daniel Pfeffer · Answer 1 · 2024-04-25T02:53:00

Solution 1

HDCs are thread-specific. You are creating the HDC in your main thread, but using it in a child thread. This has always been forbidden in Windows.

Posted 25-Apr-24 2:53am

Daniel Pfeffer

Why is startdoc not succeeding?

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Why is startdoc not succeeding?

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