Get the topmost window of my own application ONLY - in C

Question

I'm using the following code to get a handle of the topmost window:

HWND hwnd;
hwnd = GetForegroundWindow();

The problem with this is that it returns the top most system-wide. Is there any way to get the topmost ONLY from my own application?

I want to get the top most window ONLY of my application. This means, that I need an API to get my own's app top most window and NOT the systemwide top most window as GetForegroundWindow() does. Thanks!

EDIT:

OK, let me be clear here. My problem is that I am able to get the HWND for a window that doesn't belong to MY application. What I want to get is the TOPMOST for ONLY my application. If the HWND belongs to another application then I should not get the information.

Answer 1

Here is a callback you can use with EnumWindows():

BOOL CALLBACK FindTopmostWnd(HWND hwnd, LPARAM lParam)
{
    HWND* pHwnd = (HWND*)lParam;

    HWND myParent = hwnd;
    do
    {
        myParent = GetParent(myParent);
    }
    while (myParent && (myParent != *pHwnd));

    if (myParent != 0)
    {
        // If the window is a menu_worker window then use it's parent
        TCHAR szClassName[7];
        while (0 != GetClassName(hwnd, szClassName, 7)
            && 0 != _tcsncmp(szClassName, TEXT("Dialog"), 6)
            && 0 != _tcsncmp(szClassName, TEXT("Afx"), 3)
            )
        {
            // find the worker's parent
            hwnd = GetParent(hwnd);
        }

        *pHwnd = hwnd;

        return FALSE;
    }

    return TRUE;
}

As Adam points out, the LPARAM passed to EnumWindows() should be a pointer to an HWND. So you probably want to do something like this:

HWND hTopmostWnd = hWnd;
EnumWindows(FindTopmostWnd, (LPARAM)&hTopmostWnd);