FIX: Assert in AtlCtl.cpp, Line 121 (183211)
The information in this article applies to:
- The Microsoft Active Template Library (ATL) 2.0, when used with:
- Microsoft Visual C++, 32-bit Enterprise Edition 4.2b
- Microsoft Visual C++, 32-bit Professional Edition 4.2b
- Microsoft Visual C++, 32-bit Enterprise Edition 5.0
- Microsoft Visual C++, 32-bit Professional Edition 5.0
- The Microsoft Active Template Library (ATL) 2.1, when used with:
- Microsoft Visual C++, 32-bit Enterprise Edition 4.2b
- Microsoft Visual C++, 32-bit Professional Edition 4.2b
- Microsoft Visual C++, 32-bit Enterprise Edition 5.0
- Microsoft Visual C++, 32-bit Professional Edition 5.0
This article was previously published under Q183211 SYMPTOMS
When you insert a debug version of your ATL control into a control
container like Visual Basic, you might get an assert in AtlCtl.cpp, line The assert occurs in the
CComControlBase::IQuickActivate_QuickActivate() method that checks whether
the cbSize member of the QACONTAINER structure is equal to
sizeof(QACONTAINER):
_ASSERTE(pQACont->cbSize >= sizeof(QACONTAINER));
CAUSE
The container initializes the QACONTAINER structure and passes it into the
control using IQuickActivate::QuickActivate(). QACONTAINER is defined in
Ocidl.h that comes with both Visual C++ and the Platform SDK. However, the
Platform SDK provides a newer version of QACONTAINER that includes two
additional interface pointers. Therefore, the QACONTAINER passed in by the
container doesn't match the size of the QACONTAINER defined in the newer
Ocidl.h.
RESOLUTION
The assert is harmless and can be ignored. Or, you can get rid of the
assert by performing the following steps: - Override IQuickActivate::QuickActivate().
- Copy the contents of CComControlBase::IQuickActivate_QuickActivate()
into your override of IQuickActivate::QuickActivate().
- Comment out the assert.
STATUS
Microsoft has confirmed this to be a bug in the Microsoft products
listed at the beginning of this article. This problem was corrected in
Visual C++ version 6.0 for Windows.
| Modification Type: | Major | Last Reviewed: | 12/8/2003 |
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| Keywords: | kbATL300fix kbBug kbContainer kbCtrlCreate kbDebug kbfix kbVC600fix KB183211 |
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