Capturing a child window

I use this:

Code:

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 HWND hOW = FindWindow("ExploreWClass", NULL);
 SetWindowText(hOW, "I'v got only the bar!");

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It captures the main window only, I can capture a child window such as a button or edit box though. How do I capture a child window?

Thanks, August

Perhaps you could use EnumChildWindows to find the child window you want?

I am not fimilar with the second argument type.
Could you show me how to use it?

EnumChildWindows(hOW, ??????, lParam);

The 2nd argument is to a callback function that looks like this.

For example,

Code:

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BOOL CALLBACK EnumChildProc( HWND hwnd, LPARAM lParam )
{
  int* count = (int*) lParam ;
 
  (*count)++;
 
  return TRUE ; // get next child window if it exists
}

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And I call EnumChildWindows like this.

Code:

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          int count = 0 ;
          EnumChildWindows( hwnd, EnumChildProc, (LPARAM)&count ) ;
          TCHAR buffer[100];
          wsprintf( buffer, "%d", count );
          MessageBox( hwnd, buffer, "Number of Child Windows", MB_OK );
          return 0;

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I tried to compile your script but I got the error:

Quote:

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Originally Posted by Dev-C++

`EnumChildProc' undeclared (first use in this function)

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Did you define EnumChildProc?

Is it in scope?

Okay, now I did it, it tells me the number of child windows in a parent window.

int count = 0 ;
HWND hMainForm = FindWindow("SysListView32", NULL);
EnumChildWindows( hMainForm, EnumChildProc, (LPARAM)&count ) ;
TCHAR buffer[100];
wsprintf( buffer, "%d", count );
MessageBox( hwnd, buffer, "Number of Child Windows", MB_OK );
return 0;

That is neat, but how to I get the handle for each one of those windows?

Take a look at the hwnd parameter for EnumChildProc .

Okay, I got it now. Thanks Dante Shamest!