C / C++ / MFC

George_George wrote:

Seems that you like using system internal functions other than implement them by yourself

George_George wrote:

Any ideas or reference materials?

struct MyObject
{
	MyObject(int x, int y)
	{
		mX = x; mY = y;
	}

	// binary predicate for the case of storing values
	static bool ComparatorByX_values(const MyObject & obj1, const MyObject & obj2)
	{
		return obj1.mX < obj2.mY;
	}

	// binary predicate for the case of storing pointers
	static bool ComparatorByX_pointers(const MyObject * obj1, const MyObject * obj2)
	{
		return obj1->mX < obj2->mY;
	}

	int mX, mY;
};


int main()
{
	{
		// case 1: storing values.

		std::vector< MyObject > vector;

		vector.push_back(MyObject(3, 20));
		vector.push_back(MyObject(2, 10));
		vector.push_back(MyObject(1, 30));

		// sort by X
		std::sort(vector.begin(), vector.end(), MyObject::ComparatorByX_values);

		// print X
		for(size_t i = 0; i < vector.size(); ++i)
		{
			printf("%i\n", vector[i].mX);
		}
	}

	{
		// case 2: storing pointers.

		std::vector< MyObject * > vector;

		vector.push_back(new MyObject(3, 20));
		vector.push_back(new MyObject(2, 10));
		vector.push_back(new MyObject(1, 30));

		// sort by X
		std::sort(vector.begin(), vector.end(), MyObject::ComparatorByX_pointers);

		for(size_t i = 0; i < vector.size(); ++i)
		{
			printf("%i\n", vector[i]->mX);
		}

		// (TODO: delete the objects using "delete" in a loop)

	}
}

::SetForegroundWindow(hwnd);
::TrackPopupMenu(...);
::PostMessage(hwnd, WM_NULL, 0, 0);

SetForegroundWindow();
TrackPopupMenu(...);
PostMessage(WM_NULL);

HMODULE hmodule;<br />
hmodule = AfxLoadLibrary("libavcodec.dll");<br />
    if (!AfxLoadLibrary(_T("libavcodec.dll")))<br />
       // return 1;<br />
	   AfxMessageBox("failed to load");<br />
	typedef void * (__stdcall *avcodec_register_all)();<br />
GetProcAddress(hmodule,"avcodec_register_all");<br />
void * objptr= avcodec_register_all();

<br />
/*   in dll file<br />
extern "C" BSTR FAR PASCAL EXPORT TestFunction(HWND hWnd,TCHAR lpt[50])<br />
{<br />
AFX_MANAGE_STATE(AfxGetStaticModuleState());<br />
BSTR		 Returnbstr;<br />
...<br />
...<br />
return Returnbstr;<br />
}<br />
*/<br />
<br />
//////////////Include file//////////////////<br />
typedef BSTR FAR  (WINAPI *TESTFUNCTION)(HWND hWnd,TCHAR lpt[50]);<br />
	TESTFUNCTION		    m_TestFunction;<br />
<br />
/////////////Cpp file///////////////////////////////<br />
	LibraryDll=LoadLibrary("Testdll.dll");<br />
<br />
	m_TestFunction=(TESTFUNCTION)GetProcAddress(LibraryDll,"TestFunction");//function in dll file<br />
<br />
	m_TestFunction(pWnd->m_hWnd,NULL);