Question

There is an externally running program that i need the capability to resize. The kicker for me is that part of the title is the version and other specific information related to that instance. I know the substring that should be consistent across versions.
I have attempted the Findwindow() function, which works well if you have the exact wording of the title, but not when you only have a portion. I have also tried EnumWindows, but i believe that has the same limitations (i didn’t have much luck with it).
I feel the simplest thing i could do (if possible) would be to get the window handle from the image name in order to do my resizing.
Ideas?

Answer 1

Here’s a working piece of code I just tested on MSVS 2010 that works perfectly:

#include <stdlib.h>
#include <string.h>
#include <tchar.h>
#include <windows.h>


BOOL CALLBACK FindWindowBySubstr(HWND hwnd, LPARAM substring)
{
    const DWORD TITLE_SIZE = 1024;
    TCHAR windowTitle[TITLE_SIZE];

    if (GetWindowText(hwnd, windowTitle, TITLE_SIZE))
    {
        //_tprintf(TEXT("%s\n"), windowTitle);
        // Uncomment to print all windows being enumerated
        if (_tcsstr(windowTitle, LPCTSTR(substring)) != NULL)
        {
            // We found the window! Stop enumerating.
            return false;
        }
    }
    return true; // Need to continue enumerating windows
}

int main() 
{
    const TCHAR substring[] = TEXT("Substring");
    EnumWindows(FindWindowBySubstr, (LPARAM)substring);
}