Debug Assertion Failed while using ActiveX control - mfcc

Question

Am newbie to this forum & MFC... Am getting Debug Assertion Failed
while using ActiveX control. Please guide me on this..My code looks
like this:
//CMyProjectDlg.h
class CMyProjectDlg: public CDialog
{
public:
CMyProject(CWnd* pParent = NULL);
enum { IDD = IDD_CMYPROJECT_DIALOG };
CMiDocView m_MIDOCtrl;
//Here CMiDocView is the class defined in other header file
protected:
BOOL bReadOCRByMODIAXCtrl(CString csFilePath, CString &csText);
};
//CMyProjectDlg.cpp
BOOL CMyProjectDlg::bReadOCRByMODIAXCtrl(CString csFilePath, CString &csText)
{
BOOL bRet = TRUE;
HRESULT hr = 0;
csText.Empty();
IUnknown *pVal = NULL;
IDocument *IDobj = NULL;
ILayout *ILayout = NULL;
IImages *IImages = NULL;
IImage *IImage = NULL;
IWords *IWords = NULL;
IWord *IWord = NULL;
try{
pVal = (IUnknown *) m_MIDOCtrl.GetDocument();
//After Executing this statement, I used to Debug Assertion failed...
if ( pVal != NULL )
{
hr = pVal->QueryInterface(IID_IDocument,(void**) &IDobj);
if ( SUCCEEDED(hr) )
{
hr = IDobj->OCR(miLANG_SYSDEFAULT,1,1);
if ( SUCCEEDED(hr) )
{
IDobj->get_Images(&IImages);
long iImageCount=0;
IImages->get_Count(&iImageCount);
for ( int img =0; img<iImageCount;img++)
{
IImages->get_Item(img,(IDispatch**)&IImage);
IImage->get_Layout(&ILayout);
long numWord=0;
ILayout->get_NumWords(&numWord);
ILayout->get_Words(&IWords);
IWords->get_Count(&numWord);
for ( long i=0; i<numWord;i++)
{
IWords->get_Item(i,(IDispatch**)&IWord);
CString csTemp;
BSTR result;
IWord->get_Text(&result);
char buf[256];
sprintf(buf,"%S",result);
csTemp.Format("%s",buf);
csText += csTemp;
csText +=" ";
//Release all objects
IWord->Release();
IWords->Release();
ILayout->Release();
IImage->Release();
}
IImages->Release();
} else {
bRet = FALSE;
}
} else {
bRet = FALSE;
}
IDobj->Close(0);
IDobj->Release();
pVal->Release();
} else {
bRet = FALSE;
}
pVal = NULL;
IDobj = NULL;
ILayout = NULL;
IImages = NULL;
IImage = NULL;
IWords = NULL;
IWord = NULL;
}
catch(...)
{
}
return bRet;
}
void CMyProjectDlg::OnBnClickedOCR()
{
//Dynamic object creation:
CMyProjectDlg *ob = new CMyProjectDlg;
((CMiDocView *)GetDlgItem(IDC_MIDOCVIEW1))->SetFileName("E:\\aaa.tiff");
//IDC_MIDOCVIEW is the ID for the ActiveX control..
((CMiDocView *) GetDlgItem( IDC_MIDOCVIEW1 ))->SetFitMode(1);
CString cs;
ob->bReadOCRByMODIAXCtrl("E:\\aaa.tiff",cs);
//Release the memory:
delete ob;
}
After clicking OCR button, I used to get Debug assertion failed on the line:
pVal = (IUnknown *) m_MIDOCtrl.GetDocument();
When i press retry, the control goes to
ASSERT(m_pCtrlsite != NULL ) in winocc.cpp
while Debugging i came to know that {CMIDOCView hWnd = 0x0000000}.
Please can anyone suggest me what am doing wrong here ??
Thank you all..