EnumPropsEx Error

[n00b3]

Hello,

I am trying to get the properties of a Microsoft's Notepad.exe window. I have an instance of this application running when I execute the code below.


#include <iostream>
#include <windows.h>

using namespace std;

BOOL CALLBACK PropEnumProcEx(HWND hwnd, LPTSTR lpszString, HANDLE hData, ULONG_PTR dwData) {
cout << "Property Label: " << lpszString << "." << endl;
return true;
}

int main()
{
HWND hNote = FindWindow("Notepad", NULL);
cout << "Notepad's handle: " << hNote << endl;
EnumPropsEx(hNote, PropEnumProcEx, 0);
cout << "Done" << endl;
return 0;
}



The output is:

Notepad's handle: 0x7e0b7e
Property Label:

Then i receive a "properties.exe has encountered a problem and needs to close. We are sorry for the inconvenience." Windows error message.

{P.S. my program is called properties.exe}

If I don't have a reference to lpszString in the callback function then the code executes as expected through to the end. I suspect I am not using the pointer of the string correctly...?

If someone could shed some light that would be appreciated.

Thanks,

[Zaita]

http://www.answers.com/topic/enumpropsex?cat=technology

Try looking at that. :)

My guess is cout is trying to treat lpszString as a null-terminated string, when perhaps it's not etc. So it's trying to read into invalid memory.