I bought Fingerprint reader ZK7500, it SDK is written in MFC. I want to remake it to Qt.

1) to code
Qt Code: 
  1. QAxWidget *ax = new QAxWidget();
  2. ax->setControl(QString::fromUtf8("{CA69969C-2F27-41D3-954D-A48B941C3BA7}"));
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I received a warning
Qt Code: 
  1. QAxBase: Unhandled type LPSTR
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This is critical?

2) at MFC inbound events handled as follows:
Qt Code: 
  1. BEGIN_EVENTSINK_MAP(CDemoDlg, CDialog)
  2.     //{{AFX_EVENTSINK_MAP(CDemoDlg)
  3. 	ON_EVENT(CDemoDlg,                    IDC_ZKFPENGX2, 8 /* OnImageReceived */, OnOnImageReceivedZkfpengx2, VTS_PBOOL)
  4. 	ON_EVENT(CDemoDlg,                    IDC_ZKFPENGX2, 10 /* OnCapture */,      OnOnCaptureZkfpengx2,       VTS_BOOL VTS_VARIANT)
  5. 	ON_EVENT(CDemoDlg,                    IDC_ZKFPENGX2, 9 /* OneEnroll */,       OnOnEnrollZkfpengx2,        VTS_BOOL VTS_VARIANT)
  6. 	ON_EVENT(CDemoDlg,                    IDC_ZKFPENGX2, 5 /* OnFeatureInfo */,   OnOnFeatureInfoZkfpengx2,   VTS_I4)
  7.     //}}AFX_EVENTSINK_MAP
  8. END_EVENTSINK_MAP()
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How to do it on Qt? I have not found *.TLB file with definitions of functions.

3) I have many functions generated by MFC Wizard such as:
Qt Code: 
  1. void SaveJPG(LPCTSTR FileName)
  2. 	{
  3. 		static BYTE parms[] = VTS_BSTR ;
  4.                 InvokeHelper(0x18, DISPATCH_METHOD, VT_EMPTY, NULL, parms, FileName);
  5. 	}
  6. long InitEngine()
  7. 	{
  8. 		long result;
  9.                 InvokeHelper(0x1a, DISPATCH_METHOD, VT_I4, (void*)&result, NULL);
  10. 	        return result;
  11. 	}
  12. ...
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I found this topic, but did not work out. How it correctly to remake to Qt.

Sorry for my Google Translate.