C / C++ / MFC

#include <stdio.h>
#include <stdlib.h>
extern char**_environ;
 
int main(int argc, char *argv[], char *envp[])
{
  char **next = _environ;
  
  while (*next) 
  {
    printf("%s\n", *next);
    next++;
  }
  return 0;
}</stdlib.h></stdio.h>

VKupunaram wrote:

from VS2005 onward

struct MYLISTVIEW
{
};

BOOL CALLBACK EnumWindowsProc(HWND hwnd, LPARAM lParam)
{
#define MAX_TEXT_LEN 256
	MYLISTVIEW *plvData = (MYLISTVIEW *)lParam;
	if (plvData)
	{
		TCHAR szWndText[MAX_TEXT_LEN] = _T("");

		LONG lStyle = GetWindowLong(hwnd, GWL_STYLE);
		LONG lExStyle = GetWindowLong(hwnd, GWL_EXSTYLE);

		// filter the window handles depending on your need
		if (IsWindowVisible(hwnd) && !GetParent(hwnd) && hwnd != GetDesktopWindow() && (
			/*lExStyle & WS_EX_APPWINDOW || */
			!(lExStyle & WS_EX_NOACTIVATE || lExStyle & WS_EX_TOOLWINDOW)))
		{			
			RECT rc = {0};
			GetWindowRect(hwnd, &rc);
			if (rc.bottom - rc.top && rc.right - rc.left)
			{
				GetWindowText(hwnd, szWndText, MAX_TEXT_LEN);

                                // add the text to your view
				AddWndTextToListView(plvData, szWndText);
			}			
		}
	}
	return TRUE;	
}

MYLISTVIEW g_lvData;

void AddOpenedWindowsToListView()
{
	EnumWindows(EnumWindowsProc, (LPARAM)&g_lvData);
}