PRB: MULTIPAD Sample from Win 3.1 SDK Gives Printing Error

ID: Q94607

3.10 WINDOWS kbprg kbprb

The information in this article applies to:

Microsoft Windows Software Development Kit (SDK) 3.1

SYMPTOMS

The MULTIPAD sample that ships with the Microsoft Windows version 3.1 SDK allows only one print job to be sent to the printer. Any further attempts to print result in the following error:

Cannot print <document name>!

The document is not printed, and you must re-start MULTIPAD to do any printing.

CAUSE

The PRINTDLG data structure used for printing is a global variable, and two members of this structure are invalid after the first print job is sent. These members are not properly initialized for subsequent print jobs.

RESOLUTION

In the MPPRINT.C file, in the GetPrinterDC() routine, the following lines:


   if (pd.hDevNames)

   GlobalFree(pd.hDevNames);

   if (pd.hDevMode)

   GlobalFree(pd.hDevMode);

should be changed to:


   if (pd.hDevNames)
   {

    GlobalFree(pd.hDevNames);
    pd.hDevNames=NULL;

   }
   if (pd.hDevMode)
   {

    GlobalFree(pd.hDevMode);
    pd.hDevMode=NULL;

   }

STATUS

This behavior is by design.

Additional query words: 3.10

Keywords : kb16bitonly kbDSupport kbSDKWin16
Version : WINDOWS:3.1
Platform : WINDOWS
Issue type : kbprb