FindWindow is not working?

Question

I just want to know why this code is not working?

    HWND hWnds = FindWindow(NULL,(LPCTSTR)"Calculator");

It always returns NULL for the hWnds....

Any idea how to fix this? Thank you :)

Don't cast, use L"Calculator". – Hans Passant Jul 21 '11 at 19:02 — Hans Passant, Jul 21 '11 at 19:02

score 4 · Accepted Answer · answered Jul 21 '11 at 18:37

4

Dont cast the string.

HWND hWnds = FindWindow(NULL,_T("Calculator"));

answered Jul 21 '11 at 18:37

Daniel A. White

I've tried above code, I wonder why I keep getting this error? 1>c:\users\owner\documents\visual studio 2008\projects\invoke\invoke\invoke.cpp(59) : error C3861: '_T': identifier not found – zia Jul 21 '11 at 18:54
do you have `#include ` at the top? – Daniel A. White Jul 21 '11 at 19:18
1

@zia: `_T` is actually defined in – Raphaël Saint-Pierre Jul 21 '11 at 19:59

score 0 · Answer 2 · answered Jul 22 '11 at 15:41

Make a folder named 'Calculator' and enter into it using Windows Explorer.

Now run your program - wrong window handle would be returned!

Using Spy++ on Windows 7, I found out class-name of Calculator window to be: CalcFrame.

Try using this:

HWND hWnds = FindWindow(_T("CalcFrame"), NULL);

2 Answers2