CToolBarCtrl::AddBitmap() gives me trouble in afxcrit.cpp

[timv]

m_wndToolBar.Create(this);
m_wndToolBar.GetToolBarCtrl().AddBitmap(10,IDB_GRIDTB);

where IDB_GRIDTB is a bitmap resource containing 10 buttons of 16x16. The bitmap is 160x16. I tried to SetBitmapSize() but it didn't help.

The 'AddBitmap' line gives me the following error:

Unhandled exception at 0x5d0a7f36 in Tester.exe: 0xC0000005: Access violation reading location 0x0383fffc.

The crash occurs somewhere at the end of this function:

void AFXAPI AfxUnlockGlobals(int nLockType)
{
	ASSERT(_afxCriticalInit);
	ASSERT((UINT)nLockType < CRIT_MAX);

	// unlock specific resource
	ASSERT(_afxLockInit[nLockType]);
#ifdef _DEBUG
	ASSERT(--_afxResourceLocked[nLockType] >= 0);
#endif
	LeaveCriticalSection(&_afxResourceLock[nLockType]);
}

in afxcrit.cpp that is.

edit: I also just saw that m_wndToolBar.GetToolBarCtrl().AddBitmap(9,IDR_MAINFRAME); works. Maybe the problem is that my bitmap has 24bit colours?


timv