Re: How can I catch SetCurSel in ComboBox control ? - C / C++ / MFC Discussion Boards

How can I catch SetCurSel in ComboBox control ?

_Flaviu8-Apr-11 0:50

8-Apr-11 0:50

Hi everyone . I front with a problem . I have an custom CComboBox control , named CComboBoxExt , which I use it into an SDI application on CFormView .

CComboBoxExt m_Combo;

From an button , I call :

m_Combo.SetCurSel(2);

but on this call , I want to set up something in CComboBoxExt , but I didn't know how to catch this event in control ?

I try every hadlers :

void CComboBoxExt::OnSelendok() 
{
	// TODO: Add your control notification handler code here

	TRACE("\n selok \n");
}

LRESULT CComboBoxExt::OnSelchange() 
{
	// TODO: Add your control notification handler code here
TRACE("\n sel change \n");

	return 0;
}

but in vain ... can you help me , please ? Thank you !

Re: How can I catch SetCurSel in ComboBox control ?

_Flaviu8-Apr-11 1:11

_Flaviu

8-Apr-11 1:11

I try in this way too , but nothing :

BOOL CComboBoxExt::PreTranslateMessage(MSG* pMsg) 
{
	// TODO: Add your specialized code here and/or call the base class

	if(pMsg->message == CB_SETCURSEL)TRACE("\n aaaa \n");

	return CComboBox::PreTranslateMessage(pMsg);
}

Re: How can I catch SetCurSel in ComboBox control ?

Richard MacCutchan8-Apr-11 1:38

Richard MacCutchan

8-Apr-11 1:38

I think you need to capture the CBN_SELCHANGE[^] notification for the ComboBox. My MFC skills are extremely rusty so I cannot remember exactly how you code this in your class.

d@nish[^] has the answer.

Re: How can I catch SetCurSel in ComboBox control ?

_Flaviu8-Apr-11 1:47

_Flaviu

8-Apr-11 1:47

Well , as I said above , I try this :

LRESULT CComboBoxExt::OnSelchange() 
{
	// TODO: Add your control notification handler code here
TRACE("\n sel change \n");
return 0;
}

but with no effect , I mean , on

void CTestComboView::OnButton4() 
{
	// TODO: Add your control notification handler code here

	m_Combo.SetCurSel(2);
}

I have not TRACE ....

Re: How can I catch SetCurSel in ComboBox control ?

వేంకటనారాయణ(venkatmakam)8-Apr-11 1:54

వేంకటనారాయణ(venkatmakam)

8-Apr-11 1:54

I think you just overide the SetCurSel in your CComboBoxExt class.So when you call like this m_Combo.SetCurSel(2); your overidden function will be called.

int CComBoExt::SetCurSel(int index)
{
    //You can do what you want here
    return ::SendMessage(m_hWnd, CB_SETCURSEL, WPARAM(index), 0); 

}

Also if you Can handle CB_SETCURSEL message with ON_MESSAGE in your CComboBoxExt

Re: How can I catch SetCurSel in ComboBox control ?

_Flaviu8-Apr-11 2:06

_Flaviu

8-Apr-11 2:06

I try this :

// ComboBoxExt.h
public:
	int SetCurSel(int nSelect);

and

// ComboBoxExt.cpp

BEGIN_MESSAGE_MAP(CComboBoxExt, CComboBox)
	//{{AFX_MSG_MAP(CComboBoxExt)
	.....
	//}}AFX_MSG_MAP
	ON_MESSAGE(CB_SETCURSEL,SetCurSel)
END_MESSAGE_MAP()

int CComboBoxExt::SetCurSel(int nSelect) 
{
	// TODO: Add your control notification handler code here

	TRACE("\n bingo \n");
	return ::SendMessage(m_hWnd, CB_SETCURSEL, WPARAM(nSelect), 0);
}

but give an error :
unhandled exception on output.c , line 336 ...

Re: How can I catch SetCurSel in ComboBox control ?

వేంకటనారాయణ(venkatmakam)8-Apr-11 2:17

వేంకటనారాయణ(venkatmakam)

8-Apr-11 2:17

You have to handle CB_SETCURSEL Separately when you want to catch the CB_SETCURSEL this is general case.But in your case where you are calling m_Combo.SetCurSel(2), You just override the SetCurSel function.So first comment the line ON_MESSAGE(CB_SETCURSEL,SetCurSel) and then check now.

Re: How can I catch SetCurSel in ComboBox control ?

_Flaviu8-Apr-11 3:12

_Flaviu

8-Apr-11 3:12

I think it's OK now !! Thank you all very much !!! Thumbs Up | :thumbsup:

Re: How can I catch SetCurSel in ComboBox control ?

David Crow8-Apr-11 3:34

David Crow

8-Apr-11 3:34

Flaviu 2 wrote:
From an button , I call
m_Combo.SetCurSel(2);
but on this call , I want to set up something in CComboBoxExt , but I didn't know how to catch this event in control ?

Why not just "set up something" before calling SetCurSel()?

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"Some people are making such thorough preparation for rainy days that they aren't enjoying today's sunshine." - William Feather

Re: How can I catch SetCurSel in ComboBox control ? [modified]

_Flaviu8-Apr-11 4:47

_Flaviu

8-Apr-11 4:47

I want to setup an standard behaviour to my CComboBox control , so user no need take care of ... and it's about an protected member to set up ...

modified on Friday, April 8, 2011 2:11 PM

Re: How can I catch SetCurSel in ComboBox control ?

mrshiyi10-Apr-11 17:23

mrshiyi

10-Apr-11 17:23

CODE: because my english is so bad;

in onbutton;

CString tempstr1;
CString tempstr2;
getdlgitemText(comboBoxID,tempstr1);
m_comboBox.setCursel(2);
getdlgitemText(comboBoxID,tempstr2);
if(tempstr1 != tempstr2)
{
TRACE("CHANGE");
}

i don't know that it is ok;
you try;

Re: How can I catch SetCurSel in ComboBox control ?

_Flaviu11-Apr-11 5:55

_Flaviu

11-Apr-11 5:55

This is not working because I could have identical string with different item data associated ...

Re: How can I catch SetCurSel in ComboBox control ?

Radself16-Apr-11 6:22

Radself

16-Apr-11 6:22

void CXXXView::ONFUC
{
   //TODO:add you code here!
}

cocreateinstanceasadmin failed.

vishalgpt7-Apr-11 23:49

vishalgpt

7-Apr-11 23:49

i new to c++, need help. I am unable to start Elevation using CoCreateInstanceAsAdmin. why it fails. someone please help. Entire code is given below.

ITestCom.dll

common.h

#ifndef _COMMON_H
#define _COMMON_H

#include <ObjBase.h>

// {6A75080D-86FC-45ca-82B9-0A2E0F482072}
DEFINE_GUID(CLSID_TestCom, 
0x6a75080d, 0x86fc, 0x45ca, 0x82, 0xb9, 0xa, 0x2e, 0xf, 0x48, 0x20, 0x72);


// {8E6C7162-4D3A-4280-A4FF-33D23F5E1B6F}
DEFINE_GUID(IIDTestCom, 
0x8e6c7162, 0x4d3a, 0x4280, 0xa4, 0xff, 0x33, 0xd2, 0x3f, 0x5e, 0x1b, 0x6f);

DECLARE_INTERFACE_(IID_IIDTestCom, IUnknown)
{
	STDMETHOD	(HelloWorld)()PURE;
};
#endif

ITestCom.cpp

#define WIN32_LEAN_AND_MEAN
#include <Windows.h>

#define INITGUID

#include <ObjBase.h>
#include <sddl.h>
#include "common.h"

#include <tchar.h>
#include <OleCtl.h>
#include "ITestCom.h"

#define MAX_STRING_LENGTH	255
#define GUID_SIZE	128

HANDLE g_Module;
HMODULE g_hModule = NULL;
ULONG g_cObjects = 0;
ULONG g_cLocks = 0;

BOOL APIENTRY DllMain( HANDLE hModule,
						DWORD ul_reason_for_call,
						LPVOID lpReserved
					 )
{
	if (DLL_PROCESS_ATTACH == ul_reason_for_call)
		g_Module = hModule;
	return TRUE;
}

STDAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
{
	HRESULT hr = NOERROR;
	CTestComFactory *cf = NULL;

	if(CLSID_TestCom == rclsid)
	{
		cf = new CTestComFactory();
		if (NULL == cf)
			return E_OUTOFMEMORY;

		//Get the required interface
		hr = cf->QueryInterface(riid,ppv);
		if(FAILED(hr))
		{
			delete cf;
			cf=NULL;
			return hr;
		}
	}
	else
		hr = CLASS_E_CLASSNOTAVAILABLE;
		return hr;
}
BOOL ServerCanUnloadNow(void)
{
	if (0==g_cObjects && 0 == g_cLocks)
		return TRUE;
	else
		return FALSE;
}

STDAPI DllCanUnloadNow(void)
{
	if(ServerCanUnloadNow()) return S_OK;
	else
		return S_FALSE;
}

STDAPI DllRegisterServer(void)
{
	BOOL bOK;
    TCHAR szModulePath[MAXPATH +1];
	TCHAR szCLSID[GUID_SIZE+1];
	TCHAR szAppID[GUID_SIZE+1];
	TCHAR szCLSIDKey[MAX_STRING_LENGTH+1];
	TCHAR szAppIDKey[MAX_STRING_LENGTH + 1];
	TCHAR szLocal[MAX_STRING_LENGTH + 1];
	WCHAR wszGUID[GUID_SIZE+1];

	GetModuleFileName((HMODULE)g_Module,szModulePath,MAX_STRING_LENGTH);
	//Convert the CLSID to the format
	//{00000000-0000-0000-0000-00000000}

	StringFromGUID2(CLSID_TestCom,wszGUID,sizeof(wszGUID)/sizeof(wchar_t));
	_tcscpy(szCLSID,wszGUID);

	StringFromGUID2(IIDTestCom,wszGUID,sizeof(wszGUID)/sizeof(wchar_t));
	_tcscpy(szAppID,wszGUID);

	//HKEY CLASS ROOT\CLSID
	_tcscpy(szCLSIDKey,_T("CLSID\\"));
	_tcscat(szCLSIDKey,szCLSID);

	//HKEY CLASS ROOT\AppID
	_tcscpy(szAppIDKey,_T("AppID\\"));
	_tcscat(szAppIDKey,szAppID);

	_tcscpy(szLocal,_T("@"));
	_tcscat(szLocal,szModulePath);
	_tcscat(szLocal,_T(",-101"));

	bOK = SetRegKeyValue(HKEY_CLASSES_ROOT,szCLSIDKey, NULL, NULL, _T("ITestCom In-Proc Server"));
	bOK = SetRegKeyValue(HKEY_CLASSES_ROOT,szAppIDKey,NULL,NULL,_T(""));
	
	bOK = SetOTSRegValue(HKEY_CLASSES_ROOT,szAppIDKey);
	bOK = SetRegKeyValue(HKEY_CLASSES_ROOT,szAppIDKey,NULL,_T("DllSurrogate"),_T(""));

	//if (bOK)
		bOK = SetRegKeyValue(HKEY_CLASSES_ROOT,szCLSIDKey,NULL,_T("LocalizedString"),szLocal);
		bOK = SetRegKeyValue(HKEY_CLASSES_ROOT,szCLSIDKey,NULL,_T("AppID"),szAppID);
	//APPID will go here.
	if (bOK)
		bOK = SetRegKeyValue(HKEY_CLASSES_ROOT,szCLSIDKey,_T("InProcServer32"),NULL,szModulePath);
		bOK = SetRegKeyValue(HKEY_CLASSES_ROOT,szCLSIDKey,_T("Elevation"),_T("Enabled"),_T("1"),REG_DWORD);
		if(bOK)
			bOK = SetRegKeyValue(HKEY_CLASSES_ROOT,szCLSIDKey,_T("InProcServer32"),_T("ThreadingModel"),_T("Apartment"));
	if (bOK)
		return NOERROR;
	else
		return SELFREG_E_CLASS;
}

BOOL SetRegKeyValue(HKEY hKeyRoot, LPTSTR lpszKey, LPTSTR lpszSubKey, LPTSTR lpszNamedValue, LPTSTR lpszValue, DWORD dwType)
{
	BOOL bOK = FALSE;
	long lErrorCode;
	HKEY hKey;
	TCHAR szKey[MAX_STRING_LENGTH + 1];
	_tcscpy(szKey,lpszKey);

	if (NULL != lpszSubKey)
	{
		_tcscat(szKey,_T("\\"));
		_tcscat(szKey,lpszSubKey);
	}
	lErrorCode = RegCreateKeyEx(hKeyRoot,szKey,0,NULL,REG_OPTION_NON_VOLATILE,KEY_ALL_ACCESS,NULL,&hKey,NULL);

	if (ERROR_SUCCESS==lErrorCode)
	{
		lErrorCode = RegSetValueExW(hKey, lpszNamedValue, 0 , dwType,(BYTE*)lpszValue,(_tcslen(lpszValue)+1)*sizeof(TCHAR));
		if(ERROR_SUCCESS == lErrorCode)
			bOK = TRUE;
		RegCloseKey(hKey);
	}
	return bOK;
}

STDAPI DllUnregisterServer(void)
{
	long lErrorCode;
	TCHAR szCLSID[GUID_SIZE+1];
	TCHAR szCLSIDKey[MAX_STRING_LENGTH +1];
	TCHAR szInprocServer32Key[MAX_STRING_LENGTH+1];
	wchar_t wszGUID[GUID_SIZE+1];

	StringFromGUID2(CLSID_TestCom,wszGUID,sizeof(wszGUID)/sizeof(wchar_t));

	_tcscpy(szCLSID,wszGUID);

	_tcscpy(szCLSIDKey, _T("CLSID\\"));
	_tcscat(szCLSIDKey, szCLSID);
	_tcscpy(szInprocServer32Key,szCLSIDKey);
	_tcscat(szInprocServer32Key,_T("\\InProcServer32"));

	//Delete sub key first

	lErrorCode= RegDeleteKey(HKEY_CLASSES_ROOT,szInprocServer32Key);
	//Delete the entry under clsid
	if(ERROR_SUCCESS == lErrorCode)
		lErrorCode = RegDeleteKey(HKEY_CLASSES_ROOT,szCLSIDKey);
	if(ERROR_SUCCESS == lErrorCode)
		return NOERROR;
	else
		return SELFREG_E_CLASS;
}

STDMETHODIMP CTestIID::QueryInterface(REFIID riid, LPVOID *ppv)
{
	*ppv = NULL;
	if (IID_IUnknown == riid)
		*ppv = (LPVOID)(IUnknown *) this;
	else if(IIDTestCom == riid)
		*ppv = (LPVOID)(IID_IIDTestCom *) this;
	else
		return E_NOINTERFACE;
	AddRef();
	return NOERROR;

}

STDMETHODIMP_(ULONG)CTestIID::AddRef(void)
{
	return ++m_refcnt;
}

STDMETHODIMP_(ULONG)CTestIID::Release(void)
{
	--m_refcnt;
	if(0==m_refcnt)
	{
		delete this;
		return 0;
	}
	return m_refcnt;
}

STDMETHODIMP CTestIID::HelloWorld()
{
	MessageBox(NULL,_T("Wow: I am Inside COM"),_T("COM Test For Elevation"),MB_OK);
	return S_OK;
}


STDMETHODIMP CTestComFactory::QueryInterface(REFIID riid, LPVOID *ppv)
{
	*ppv = NULL;
		if(IID_IUnknown == riid)
			*ppv=(LPVOID)(IUnknown *)this;
		else if(IID_IClassFactory == riid)
			*ppv = (LPVOID)(IClassFactory *) this;
		else
			return E_NOINTERFACE;
		AddRef();
		return NOERROR;
}

STDMETHODIMP_(ULONG)CTestComFactory::AddRef(void)
{
	return ++m_refcnt;
}

STDMETHODIMP_(ULONG)CTestComFactory::Release(void)
{
	--m_refcnt;
	if (0==m_refcnt)
	{
		delete this;
		return 0;
	}
	return m_refcnt;
}

STDMETHODIMP CTestComFactory::LockServer(BOOL bLock)
{
	if(bLock)g_cLocks++;
	else g_cLocks--;
	return NOERROR;
}

STDMETHODIMP CTestComFactory::CreateInstance(IUnknown *pUnknownOuter, REFIID riid, LPVOID *ppv)
{
	HRESULT hr;
	CTestIID *pIID = NULL;

	*ppv = NULL;
	if (NULL != pUnknownOuter)
		return CLASS_E_NOAGGREGATION;
	pIID = new CTestIID();

	if (NULL==pIID)
		return E_OUTOFMEMORY;

	hr = pIID->QueryInterface(riid,ppv);
	if (FAILED(hr))
	{
		delete pIID;
		pIID = NULL;
		return hr;

	}
	g_cObjects++;
	return NOERROR;
}


BOOL GetAccessPermissionsForUACServer(SECURITY_DESCRIPTOR **ppSD)
{
// Local call permissions to IU, SY
	LPTSTR lptszSDDL = _T("O:BAG:BAD:(A;;0x3;;;IU)(A;;0x3;;;SY)");
	SECURITY_DESCRIPTOR *pSD = NULL;
	*ppSD = NULL;

	if (ConvertStringSecurityDescriptorToSecurityDescriptor(lptszSDDL, SDDL_REVISION_1, (PSECURITY_DESCRIPTOR *)&pSD, NULL))
	{
		*ppSD = pSD;
		return TRUE;
	}

	return FALSE;
}

//
//   FUNCTION:  SetOTSRegValue(HKEY, LPCWSTR)
//
//   PURPOSE: Helper function for enabling Over the shoulder elevation at registration.
//
//   COMMENTS:
//		hKey - A handle to an open registry key as in RegCreateKeyEx.
//		tszKeyName	- The subkey location for AccessPermission
//		Registers the security descritpor for GetAccessPermissionsForUACServer,
//			opens Registry Key and calls SetAccessPermisions to set it.
//			
//
HRESULT SetOTSRegValue(HKEY hKey, LPCWSTR tszKeyName){
	HRESULT hr = S_OK;
	SECURITY_DESCRIPTOR * psd = NULL;
	HKEY hSubKey = NULL;
	DWORD err = 0;

	if(!GetAccessPermissionsForUACServer(&psd)){
		hr =  E_ACCESSDENIED;
		goto cleanup;
	}
	
	err =  RegCreateKeyEx(hKey, tszKeyName,0, NULL,  
									REG_OPTION_NON_VOLATILE, KEY_SET_VALUE, 
										NULL,   &hSubKey,  NULL); 
	if(err != ERROR_SUCCESS){
		hr = HRESULT_FROM_WIN32(err);
		goto cleanup;
	}

	if(!SetAccessPermissions(hSubKey, psd)){
		hr = E_ACCESSDENIED;
		goto cleanup;
	}
cleanup:
	RegCloseKey(hSubKey);
	LocalFree(psd);
	return hr;
}


//
//   FUNCTION: SetAccessPermissions(HKEY, PSECURITY_DESCRIPTOR)
//
//   PURPOSE: Helper function for setting the registry key AccessPermission with
//			a binary representation of the Security descriptor retrieved by 
//			GetAccessPermissionsForUACServer.
//
//   COMMENTS:
//		hkey	- The handle to an open registry key where access permissions will be set		 
//		pSD		- a reference to the SD to be written to the registry.  
//
//		Returns - TRUE on success, FALSE otherwise.	
//
BOOL SetAccessPermissions(HKEY hKey, PSECURITY_DESCRIPTOR pSD)
{
	BOOL bResult = FALSE;
	DWORD dwLen = GetSecurityDescriptorLength(pSD);
	LONG lResult;
	lResult = RegSetValueEx(hKey, 
		_T("AccessPermission"),
		0,
		REG_BINARY,
		(BYTE*)pSD,
		dwLen);
	
	if (lResult != ERROR_SUCCESS) goto done;
	bResult = TRUE;
done:
	return bResult;
}

ITestCom.h

#ifndef ITEST_COM_H
#define ITEST_COM_H

#define MAXPATH 255
#define MAX_STRING_LENGTH 255
#define GUID_SIZE 128

#include "common.h"

STDAPI	DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppvOut);
STDAPI	DllCanUnloadNow(void);
STDAPI	DllRegisterServer(void);
STDAPI	DllUnregisterServer(void);

BOOL GetAccessPermissionsForUACServer(SECURITY_DESCRIPTOR **ppSD);
BOOL SetAccessPermissions(HKEY hKey, PSECURITY_DESCRIPTOR pSD);
HRESULT SetOTSRegValue(HKEY hKey, LPCWSTR tszKeyName);

BOOL SetRegKeyValue(HKEY hKeyRoot, LPTSTR lpszKey, LPTSTR lpszSubKey, LPTSTR lpszNamedValue, LPTSTR lpszValue, DWORD dwType = REG_SZ);

class CTestComFactory: public IClassFactory
{
private:
	int m_refcnt;
public:
	//IUnknown

	STDMETHODIMP	QueryInterface(REFIID riid, LPVOID *ppv);
	STDMETHODIMP_	(ULONG) AddRef(void);
	STDMETHODIMP_	(ULONG)	Release(void);

	//IClassFactory Methods
	STDMETHODIMP	CreateInstance(IUnknown *pk, REFIID riid, void **ppv);
	STDMETHODIMP	LockServer(BOOL fLock);

	CTestComFactory(){m_refcnt=0;}
	~CTestComFactory(){}

};

class CTestIID: public IID_IIDTestCom
{
private:
	int m_refcnt;
public:
	CTestIID(){m_refcnt=0;}
	~CTestIID(){};

	STDMETHODIMP	QueryInterface(REFIID riid, LPVOID *ppv);
	STDMETHODIMP_	(ULONG) AddRef(void);
	STDMETHODIMP_	(ULONG)	Release(void);

	//IID_IIDTestCom
	STDMETHOD	(HelloWorld)();

};
#endif

myclient.exe

myclient.cpp

#include <iostream>
#define INITGUID
#include <ObjBase.h>
#include<conio.h>
#include"common.h"
#include<strsafe.h>

//#define MonikerName L"Elevation:Administrator!new:%s"	//Moniker to use
//#define CLSIDSize 45									//size required for CLSID
//#define MonikerSize	30									//size required for moniker name

using namespace std;

HRESULT CoCreateInstanceAsAdmin(HWND hwnd, REFCLSID rclsid, REFIID riid, __out void ** ppv)
{
    BIND_OPTS3 bo;
    WCHAR  wszCLSID[50];
    WCHAR  wszMonikerName[300];

    StringFromGUID2(rclsid, wszCLSID, sizeof(wszCLSID)/sizeof(wszCLSID[0])); 
    HRESULT hr = StringCchPrintf(wszMonikerName, sizeof(wszMonikerName)/sizeof(wszMonikerName[0]), L"Elevation:Administrator!new:%s", wszCLSID);
    if (FAILED(hr))
        return hr;
    memset(&bo, 0, sizeof(bo));
    bo.cbStruct = sizeof(bo);
    bo.hwnd = hwnd;
    bo.dwClassContext  = CLSCTX_LOCAL_SERVER;
    return CoGetObject(wszMonikerName, &bo, riid, ppv);
}

void wmain()
{
	wcout<<"Main: Entry"<<endl;
	

	
	IClassFactory *pcf;
	IUnknown *pUnk;
	IID_IIDTestCom *pTest,*aTest;
	HRESULT hr;

	wcout<<"Calling CoInitialize"<<endl;
	hr = CoInitialize(NULL);
	if (FAILED(hr))
	{
		wcout<<"CoInitalized : Failed"<<endl;
		_getche();
		exit(-1);
	}

	wcout<<"CoInitalize Done"<<endl;
	wcout<<"Calling CoGetClassObject" <<endl;


	hr = CoGetClassObject(CLSID_TestCom,CLSCTX_INPROC_SERVER,NULL,IID_IClassFactory,(void**)&pcf);

	if(FAILED(hr))
	{
		wcout<<"CoGetClassObject Failed"<<endl;
		_getche();
		exit(-1);
	}

	wcout<<"CoGetClassObject Done"<<endl;
	_getche();

	wcout<<"pcf->CreateInstance"<<endl;
	//hr = CoCreateInstanceAsAdmin((HWND)GetModuleHandle(NULL),CLSID_TestCom,IIDTestCom,(void**)pcf->CreateInstance(NULL,IIDTestCom,(void**)&pTest));
	hr = pcf->CreateInstance(NULL,IIDTestCom,(void**)&pTest);

	if(FAILED(hr))
	{
		wcout<<"pcf->CreateInstance Failed"<<endl;
		_getche();
		exit(-1);
	}

	wcout<<"pcf->CreateInstance done"<<endl;
	_getche();

	wcout<<"Calling Function "<<endl;
	hr = CoCreateInstanceAsAdmin((HWND)GetModuleHandle(NULL),CLSID_TestCom,IIDTestCom,(void**)&pTest);
	if(FAILED(hr))
	{
		wcout<<"Failed to CreateInstance As Admin"<<endl;
		_getche();
		exit(-1);
	}
	pTest->HelloWorld();
}

Regards,
Vishal

Re: cocreateinstanceasadmin failed.

vishalgpt8-Apr-11 3:01

vishalgpt

8-Apr-11 3:01

someone please help..

Regards,
Vishal

Re: cocreateinstanceasadmin failed.

Richard MacCutchan8-Apr-11 4:58

Richard MacCutchan

8-Apr-11 4:58

Help what, try explaining what went wrong; did you get an error code, exception etc, and if so what did they indicate?

d@nish[^] has the answer.

Re: cocreateinstanceasadmin failed. [modified]

vishalgpt8-Apr-11 6:27

vishalgpt

8-Apr-11 6:27

HRESULT hr = CoCreateInstance(CLSID_CExample,NULL,CLSCTX_LOCAL_SERVER,IID_CExample,(void**)&inf);

hr value is E_NOINTERFACE
No Such Interface Supported.

But if CLSCTX_INPROC_SERVER is used then the value of hr is S_OK

Regards,
Vishal

modified on Friday, April 8, 2011 1:04 PM

how to add button on listcontrol instead of scrollbar

raj15767-Apr-11 22:42

raj1576

7-Apr-11 22:42

i want to use button instead of scrollbar on listcontrol

Re: how to add button on listcontrol instead of scrollbar

Luc Pattyn7-Apr-11 23:44

Luc Pattyn

7-Apr-11 23:44

we know that much already. I have two suggestions for you:
- post an accurate question, providing all information one would need to be able to answer effectively;
- stop creating new threads, simply add messages to your original thread as long as it is about the same subject.

In summary, do as the other enquirers do.

Unsure | :~

Luc Pattyn [Forum Guidelines] [My Articles] Nil Volentibus Arduum

Please use <PRE> tags for code snippets, they preserve indentation, improve readability, and make me actually look at the code.

Re: how to add button on listcontrol instead of scrollbar

Hans Dietrich7-Apr-11 23:47

Hans Dietrich

7-Apr-11 23:47

Wow. Three in a row. Do you get the feeling that maybe your question isn't clear? Maybe that's why you're not getting the answer you want?

Here are some questions for you:

1. What is the button supposed to do?

2. Exactly where do you want the button to be displayed? In place of the scrollbar? In a listcontrol cell? Which cell?

3. Do you want the scrollbar to be hidden? Which scrollbar? Horizontal or vertical? Or both?

Best wishes,
Hans

[Hans Dietrich Software]

add button to listcontrol

rajniyadav1a7-Apr-11 21:53

rajniyadav1a

7-Apr-11 21:53

i want to use button instead of scrollbar

Re: add button to listcontrol

Hans Dietrich7-Apr-11 21:58

Hans Dietrich

7-Apr-11 21:58

rajniyadav1a wrote:
i want to use button instead of scrollbar

OK, by this I assume you mean you want to use a button to scroll instead of using the scrollbar.

This is fairly simple to do: create a button on the dialog, and in the button handler send WM_VSCROLL or WM_HSCROLL message. See MSDN for what the message parameters should be.

p.s. Please reply to this message, instead of creating a new message.

Best wishes,
Hans

[Hans Dietrich Software]

Re: add button to listcontrol

«_Superman_»8-Apr-11 3:36

«_Superman_»

8-Apr-11 3:36

If you're using MFC, you can use the CListCtrl::Scroll method to scroll the contents of the list control.

«_Superman_»
I love work. It gives me something to do between weekends.

Microsoft MVP (Visual C++)

Polymorphism in C

add button to listcontrol

rajniyadav1a7-Apr-11 21:42

rajniyadav1a

7-Apr-11 21:42

how to add button on listcontrol instead of scrollbar.

Re: add button to listcontrol

Hans Dietrich7-Apr-11 21:44

Hans Dietrich

7-Apr-11 21:44

What do you mean, "instead of scrollbar"? Are you currently adding a button to the scrollbar?

Please be more clear.

Best wishes,
Hans

[Hans Dietrich Software]

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.