C / C++ / MFC

void CMyDlg::OnNMClickListData(NMHDR *pNMHDR, LRESULT *pResult)
{
	/* get check box state */
	NM_LISTVIEW* pNMListView = (NM_LISTVIEW*)pNMHDR;
	*pResult = 0;

	if (pNMListView->uOldState == 0 && pNMListView->uNewState == 0)
		return;	// No change

	BOOL bPrevState = (BOOL)(((pNMListView->uOldState &
				LVIS_STATEIMAGEMASK)>>12)-1);   // Old check box state
	if (bPrevState < 0)	// On startup there's no previous state 
		bPrevState = 0; // so assign as false (unchecked)

	// New check box state
	BOOL bChecked=(BOOL)(((pNMListView->uNewState & LVIS_STATEIMAGEMASK)>>12)-1);
	if (bChecked < 0) // On non-checkbox notifications assume false
		bChecked = 0;

	if (bPrevState == bChecked) // No change in check box
		return;	
}

Samjiman wrote:

I get this error: cannot convert parameter 1 from 'char [7]' to 'char'

void drop(char v[]) { val[0] = v; }

void drop(const char v[], int nSize /* pass the size of array*/)
{
  memcpy(&val[0][0], v, nSize);
}

void drop(const char v[])
{
  strcpy(&val[0][0], v);
}

Samjiman wrote:

strcpy(&val[i][50],

Samjiman wrote:

The left most index should be the index to store the string and the right index is the maximum characters (including null char), right?

const char *drop(const char *v) { return v; }

Giorgi Dalakishvili wrote:

One possible way I'm thinking of is enumerating all controls on the form using GetNextWindow and checking control's class using GetClassName function.

Giorgi Dalakishvili wrote:

I'm not experienced in Visual c++

Force Code wrote:

I would use EnumChildWindows and check for the ctrlID for each Child Window using GetDlgCtrlID. The Ctrl ID will be unique and won't change.

Giorgi Dalakishvili wrote:

GetDlgCtrlID returns int, how would you check for class name?

Force Code wrote:

Why would you think to use GetNextWindow as opposed to EnumChildWindows?

Giorgi Dalakishvili wrote:

Yes, I'm trying to locate a specific control but I won't know its id in advance, I'll only know its class name.

Giorgi Dalakishvili wrote:

I just forgot about EnumChildWindows. Should I prefer it to GetNextWindow? Is there any significant difference between them?

Giorgi Dalakishvili wrote:

I just forgot about EnumChildWindows. Should I prefer it to GetNextWindow? Is there any significant difference between them?

#include "stdafx.h"
#include "CPConsole.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif

CWinApp theApp;

using namespace std;

int _tmain(int argc, TCHAR* argv[], TCHAR* envp[])
{
	int nRetCode = 0;

	// initialize MFC and print and error on failure
	if (!AfxWinInit(::GetModuleHandle(NULL), NULL, ::GetCommandLine(), 0))
	{
		// TODO: change error code to suit your needs
		_tprintf(_T("Fatal Error: MFC initialization failed\n"));
		nRetCode = 1;
	}
	else
	{
		<font color="brick">HWND hTarget = FindWindowEx((HWND)0x010403CE, //Hard coded handle value 
                                          NULL, //Let the search begin with the first child
                                          _T("Button"), //Class name
                                          _T("OK")); //Window title
		if(hTarget)
			AfxMessageBox(_T("OK button was found"));
		else
			AfxMessageBox(_T("Unable to find the OK button"));</font>
	}
	return nRetCode;
}