Unable to find child window of a parent window that don't have WindowName with ClassName #32770 (Dialog)

I am trying to get the hwnd of a child window(caption = "Reset") to apply in IsWindowVisible() function but the child window could not be found.

This is the code:

#include <iostream>
#include <windows.h>
using namespace std;

BOOL CALLBACK EnumWindowsProc(HWND hwnd, LPARAM lParam)
{

    char class_name[100];
    char title[100];
    GetClassNameA(hwnd,class_name, sizeof(class_name));
    GetWindowTextA(hwnd,title,sizeof(title));
    cout <<"Window title: "<<title<<endl;
    cout <<"Class name  : "<<class_name<<endl;
    cout <<"hwnd        : " <<hwnd<<endl<<endl;

    return TRUE;
}


int main()
{
    HWND hwnd = ::FindWindowA("#32770",NULL);

    EnumChildWindows(hwnd,EnumWindowsProc,0);

    system("PAUSE");

    return 0;

}

There are a lots of window with the same classname #32770 (Dialog), also without title. After run the code, the result came out different types of window (with classname like WorkerW, IME, etc.).

The tree diagram get from Spy++ are like this:

...Window 00180726 "" #32770 (Dialog)

...Window 001F0962 "Reset" Button

I tried to find the child window if window title and window class(#32770) are included, it succeed.

My question is: How to find the child window (Reset) if we don't have a specific parent window? I tried apply EnumWindows, EnumChildWindows, FindWindows, FindWindowsEx in main() but still can't get what I expect.

Advance thanks for any kind of helps.

You can use WindowFromPoint to get parent dialog if you know its position then call EnumChildWindows to get its child