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0000669

VTK

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public

2004-03-10 17:18

2011-01-13 17:00

Reporter

Alex

Assigned To

Mathieu Malaterre

Priority

normal

Severity

major

Reproducibility

always

Status

closed

Resolution

fixed

Platform

OS Version

Product Version

Target Version

Fixed in Version

Summary

0000669: Exception in vtkWin32OpenGLRenderWindow::MakeCurrent

Description

I developed ActiveX control using VTK and after the container form is closed, I always get an exception.

I traced it do the following code in the vtkWin32OpenGLRenderWindow::MakeCurrent()
if (wglMakeCurrent(this->DeviceContext, this->ContextId) != TRUE)
        {
        LPVOID lpMsgBuf;
        ::FormatMessage(
          FORMAT_MESSAGE_ALLOCATE_BUFFER |
          FORMAT_MESSAGE_FROM_SYSTEM |
          FORMAT_MESSAGE_IGNORE_INSERTS,
          NULL,
          GetLastError(),
          MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
          (LPTSTR) &lpMsgBuf,
          0,
          NULL
          );

       vtkErrorMacro("wglMakeCurrent failed in MakeCurrent(), error: "
                      << (LPCTSTR)lpMsgBuf); The reason for the excaption is that FormatMessage fails and the lpMsgBuf is NULL.
The FormatMessage failed because "The system cannot find message text for message number 0x%1 in the message file for %2."

The possible solution will be to check the result of FormatMessage

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Notes
(0000756) Mathieu Malaterre (developer) 2004-03-10 18:41	Alexf, thanks for report. This has been fixed in the CVS only as we don't officially support ActiveX. You can apply those change to your local VTK build.

Issue History
Date Modified	Username	Field	Change
2010-11-29 17:59	Mathieu Malaterre	Source_changeset_attached	=> VTK master f091ce77
2011-01-13 17:00		Source_changeset_attached	=> VTK master a2bd8391
2011-01-13 17:00		Source_changeset_attached	=> VTK master 020ef709
2011-06-16 13:11	Zack Galbreath	Category	=> (No Category)