CoInitialize has not been called

[MsmVc]

Hi All I am getting error CoInitialize has not been called.Code is here

void Ctest::OnCopyData()
{
::CoInitialize(NULL);
COleDataSource* pSource = CopyTextList();
if (!pSource)
return;

pSource->SetClipboard();

}

COleDataSource* Ctest::CopyTextFromList()
{
USES_CONVERSION;

CSharedFile sf(GMEM\_MOVEABLE | GMEM\_DDESHARE | GMEM\_ZEROINIT);
 CString str;
int nPos=m\_test.GetItemCount();
for(int i=0;i<nPos;i++)
{
	CString GetData=m\_test.GetItemText(i,0);
	str+=GetData;
	str += \_T("\\r\\n");
    sf.Write(T2A(str.GetBuffer(1)), str.GetLength());
    str.ReleaseBuffer();
}

 char c = '\\0';
 sf.Write(&c, 1);

  DWORD dwLen = (DWORD) sf.GetLength();
HGLOBAL hMem = sf.Detach();
if (!hMem)
    return NULL;

hMem = ::GlobalReAlloc(hMem, dwLen, GMEM\_MOVEABLE | GMEM\_DDESHARE | GMEM\_ZEROINIT);
if (!hMem)
    return NULL;

// Cache data
COleDataSource\* pSource = new COleDataSource();
pSource->CacheGlobalData(CF\_TEXT, hMem);

return pSource;

}

Please help me

[KarstenK]

CoInitialize(NULL) does some stuff, so you better call it some time (100ms) before you need it to be finished. Tip: you only need to call it one time per thread/app. Best in some startup code liek oninitdialog. Press F1 for help or google it. Greetings from Germany

[Niklas L]

Are you aware CopyTextList is called, but you supplied code for CopyText**From**List? Also you only need CoInitialize once. Do that in your start up routine (CWinApp::InitInstance if it's MFC)

home

[Aescleal]

Try helping yourself. Here are some things to try: - Find which line is causing the error - When you've done that step through the code in a debugger and see if the function with CoInitialize() in is executed is before that - Check that for every CoInitialize you've got a CoUninitialize Cheers, Ash

[Sauro Viti]

It's unuseful to call CoInitialize each time you need to use some COM object; call CoInitialize only once somewhere in your startup code instead. Be aware that each call to CoInitialize should be balanced with a call to CoUninitialize. From the code snippet you posted, it seems that you wrote your application using MFC, then the best places where put the calls are inside CWinApp::InitInstance and CWinApp::ExitInstance.