TQuickPDF.Create crash if CoInitialize not called

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

   TQuickPDF.Create crash if CoInitialize not called:

QuickPDF Verison: 8.12

Issue: TQuickPDF.Create blows chunks if called from an application that does not first call CoInitialize(), raising an EOleSysError "CoInitialized has not been called" exception.

Cause: The latest versions of the QuickPDF library calls CreateOleObject() and makes an assumption that the calling application will make the calls to CoInitialize() and CoUninitialize() in behalf of the library. Previous QuickPDF versions (7) seem unaffected.

Replication: Call TQuickPDF.Create from any application where CoInitialize() has not first been called.

Delphi 6 example:

program Project1;

uses
  QuickPDF;

var
  FPdfEngine : TQuickPDF;
begin
//  CoInitialize(nil);
  FPdfEngine := TQuickPDF.Create;
  try
    FPdfEngine.Free;
  except
  end;
//  CoUninitialize();
end.

Workaround: Call CoInitialize() before using the QuickPDF library and call CoUninitialize() after its use.

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
TJoe(J^) Members Profile Find Members Posts Beginner Joined: 25 May 11 Location: Florida Status: Offline Points: 7	Post Options Post Reply Quote TJoe(J^) Report Post Thanks(0) Quote Reply Topic: TQuickPDF.Create crash if CoInitialize not called Posted: 21 Nov 11 at 4:09AM
	TQuickPDF.Create crash if CoInitialize not called: QuickPDF Verison: 8.12 Issue: TQuickPDF.Create blows chunks if called from an application that does not first call CoInitialize(), raising an EOleSysError "CoInitialized has not been called" exception. Cause: The latest versions of the QuickPDF library calls CreateOleObject() and makes an assumption that the calling application will make the calls to CoInitialize() and CoUninitialize() in behalf of the library. Previous QuickPDF versions (7) seem unaffected. Replication: Call TQuickPDF.Create from any application where CoInitialize() has not first been called. Delphi 6 example: program Project1; uses QuickPDF; var FPdfEngine : TQuickPDF; begin // CoInitialize(nil); FPdfEngine := TQuickPDF.Create; try FPdfEngine.Free; except end; // CoUninitialize(); end. Workaround: Call CoInitialize() before using the QuickPDF library and call CoUninitialize() after its use.

TJoe(J^) Members Profile Find Members Posts Beginner Joined: 25 May 11 Location: Florida Status: Offline Points: 7	Post Options Post Reply Quote TJoe(J^) Report Post Thanks(0) Quote Reply Posted: 21 Nov 11 at 4:12AM
	Not all programming languages might support this workaround.

Ingo Members Profile Find Members Posts Moderator Group Joined: 29 Oct 05 Status: Offline Points: 3524	Post Options Post Reply Quote Ingo Report Post Thanks(0) Quote Reply Posted: 21 Nov 11 at 8:53AM
	Hi Joe! I didn't check this out but if you're right you should post this to the official support pages, too. Cheers, Ingo

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: 21 Nov 11 at 12:28PM
	I have passed this onto the developers and hopefully we can find a quick fix for the 8.13 release.

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: 08 Dec 11 at 1:08AM
	We have added a whole lot of code to the 8.14 beta 1 release that should overcome the the CoInitialize problem. Beta testers are very welcome. http://www.quickpdflibrary.com/blog/2011/12/quick-pdf-library-8-14-beta-1-released/ Andrew.