HashKey() in XTPMacros.h causes problems

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   HashKey() in XTPMacros.h may override MFC's HashKey() but it generates hash value in a different way from MFC. That means you cannot pass a CMap created in a DLL linked with ToolKitPro to the other DLL not linked with ToolKitPro. I don't know why we need the HashKey() in XTPMacros.h while there is one in MFC. Please remove the HashKey() in XTPMacros.h.
In XTPMacros.h:
template<> AFX_INLINE UINT AFXAPI HashKey<UINT_PTR>(UINT_PTR key) {
	return (DWORD)(((DWORD_PTR)key)>>4);
}

In MFC:
AFX_INLINE UINT AFXAPI HashKey(ARG_KEY key)
{
	// (algorithm copied from STL hash in xfunctional)
	ldiv_t HashVal = ldiv((long)(ARG_KEY)key, 127773);
	HashVal.rem = 16807 * HashVal.rem - 2836 * HashVal.quot;
	if (HashVal.rem < 0)
		HashVal.rem += 2147483647;
	return ((UINT)HashVal.rem);
}

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scotia Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 26 February 2013 Status: Offline Points: 3	Post Options Post Reply Quote scotia Report Post Thanks(0) Quote Reply Topic: HashKey() in XTPMacros.h causes problems Posted: 02 May 2013 at 12:00am
	HashKey() in XTPMacros.h may override MFC's HashKey() but it generates hash value in a different way from MFC. That means you cannot pass a CMap created in a DLL linked with ToolKitPro to the other DLL not linked with ToolKitPro. I don't know why we need the HashKey() in XTPMacros.h while there is one in MFC. Please remove the HashKey() in XTPMacros.h. In XTPMacros.h: template<> AFX_INLINE UINT AFXAPI HashKey<UINT_PTR>(UINT_PTR key) { return (DWORD)(((DWORD_PTR)key)>>4); } In MFC: AFX_INLINE UINT AFXAPI HashKey(ARG_KEY key) { // (algorithm copied from STL hash in xfunctional) ldiv_t HashVal = ldiv((long)(ARG_KEY)key, 127773); HashVal.rem = 16807 * HashVal.rem - 2836 * HashVal.quot; if (HashVal.rem < 0) HashVal.rem += 2147483647; return ((UINT)HashVal.rem); }