Printer Properties - settings

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   Ian,
Which version of Quick PDF Library are you using. 9.15 and 9.16 should work reasonably well with DEVMODE.

I will make sure we review the documentation and add some sample code.  

I suspect it is not a bug but is based on how the code is implemented.

The GetPrinterDevModeToString function returns the currently active DEVMODE string for the custom printer.  Calling SetPrinterDevModeFromString doesn't actually update the DEVMODE until the actual call to PrintDocument.  SetPrinterDevModeFromString will save the string to a temporary buffer until the call to PrintDocument.  Again some better documentation would help here.

I would need to review the code full to determine why it is working this way and determine if it makes sense to update the DEVMODE straight away or not.  There must be some reason it was done this way in the first place.

Andrew.

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
AndrewC Members Profile Find Members Posts Moderator Group Joined: 08 Dec 10 Location: Geelong, Aust Status: Offline Points: 841	Post Options Post Reply Quote AndrewC Report Post Thanks(0) Quote Reply Topic: Printer Properties - settings Posted: 20 Sep 13 at 10:38AM
	Ian, Which version of Quick PDF Library are you using. 9.15 and 9.16 should work reasonably well with DEVMODE. I will make sure we review the documentation and add some sample code. I suspect it is not a bug but is based on how the code is implemented. The GetPrinterDevModeToString function returns the currently active DEVMODE string for the custom printer. Calling SetPrinterDevModeFromString doesn't actually update the DEVMODE until the actual call to PrintDocument. SetPrinterDevModeFromString will save the string to a temporary buffer until the call to PrintDocument. Again some better documentation would help here. I would need to review the code full to determine why it is working this way and determine if it makes sense to update the DEVMODE straight away or not. There must be some reason it was done this way in the first place. Andrew.

ibigon Members Profile Find Members Posts Beginner Joined: 01 Sep 13 Location: SF Status: Offline Points: 4	Post Options Post Reply Quote ibigon Report Post Thanks(0) Quote Reply Posted: 20 Sep 13 at 10:10AM
	Guys, finally I was able to fix the problem. I did not call the "NewCustomPrinter" function before calling "SetPrinterDevModeFromString" - that was the problem. After this fix the printer accepts the passed DEVMODE. Unfortunatelly the documentation is very poor, and does not mention this fact. The function GetPrinterDevModeToString is buggy, while it returns the default DEVMODE for my custom printer instead of the modified one. std::wstring lMyPrinter = NewCustomPrinter(lSelPrinter); int lRetVal = SetPrinterDevModeFromString(lMyDevModeStr); std::string lTmpDevStr = GetPrinterDevModeToString(lMyPrinter); BUG: lTmptDevStr is not equal to lMyDevModeStr, but the printer prints with using lMyDevModeStr Thanks, Ian

ibigon Members Profile Find Members Posts Beginner Joined: 01 Sep 13 Location: SF Status: Offline Points: 4	Post Options Post Reply Quote ibigon Report Post Thanks(0) Quote Reply Posted: 19 Sep 13 at 10:58PM
	Hi, Thanks for your help. I am using c++. So finally I was able to correctly cast the std::string to DEVMODE and vice versa, but unfortunatelly the QPL SetPrinterDevModeFromString function is not working for me, and the PrintPages and PrintDocument functions prints always with default printer settings. Here is my pseudo code: std::string lOrigDevStr = GetPrinterDevModeToString(lSelPrinter); //get the default DEVMODE via QPL LPDEVMODE lDevModeP; //declare and allocate memory for the lDevModeP data ... //open printer, etc. DocumentProperties(hWnd, hPrinter, lSelPrinter, lDevModeP, NULL, DM_OUT_BUFFER\|DM_IN_PROMPT); /Show the Printer Properties Dialog and get the the modified DEVMODE into lDevModeP output buffer / std::string lModifiedDevStr (lDevModeP, lReqSize); //it is converted well to std::string SetPrinterDevModeFromString(lModifiedDevStr ); //return value is 1, unfortunately undocumented std::string lNewDevStr = GetPrinterDevModeToString(lSelPrinter); ... the read lNewDevStr is equal to initial lOrigDevStr, but it should be equal to lModifiedDevStr! The SetPrinterDevModeFromString function does not really changes the printer properties for me. Any help would be appreciated, Thanks, Ian Edited by ibigon - 19 Sep 13 at 11:00PM

AndrewC Members Profile Find Members Posts Moderator Group Joined: 08 Dec 10 Location: Geelong, Aust Status: Offline Points: 841	Post Options Post Reply Quote AndrewC Report Post Thanks(0) Quote Reply Posted: 12 Sep 13 at 11:15AM
	Ian, Which programming language are you using ? In C#, VB.NET it just needs to be a byte[] the same length as the DEVMODE structure. In Delphi it is an AnsiString. In other languages you need to call CreateBuffer, AddToBuffer and ReleaseBuffer functions to create the required string. Andrew.

ibigon Members Profile Find Members Posts Beginner Joined: 01 Sep 13 Location: SF Status: Offline Points: 4	Post Options Post Reply Quote ibigon Report Post Thanks(0) Quote Reply Posted: 01 Sep 13 at 12:55PM
	Hi, is there any API to show the printers default properties dialog in DLL version? I tried: GetPrinterDevModeFromString SetPrinterDevModeFromString None of them showed the the standard properties dialog. I can show it with the win system call: DocumentProperties with flag DM_IN_PROMPT but how can I then pass the filled DEVMODE struct to QuickPDF lib? Is there any conversion from DEVMODE to a correctly formatted string for SetPrinterDevModeFromString Thanks, Ian