GetWindowText not returning all values

[Ezrar]

Hi I'm having trouble understanding why my GetWindowText method is only returning titles of certain windows.

Using CBT hook, I'm able to detect the active window, then I use the GeetWindowTextA method to obtain the window title.

HWND hWnd = (HWND) wParam;
char wnd_title[256];
GetWindowTextA(hWnd, wnd_title, 256);

However it only prints out the title name for specific windows and ignores processes like NotePad or Microsoft word.

I have tried using GetClassName aswell however I want to retrieve the window title and not the processor name.

Any ideas on why this is happenning?

[coder777]

Read this:

https://msdn.microsoft.com/en-us/library/windows/desktop/ms633520%28v=vs.85%29.aspx

To retrieve the text of a control in another process, send a WM_GETTEXT message directly instead of calling GetWindowText.

[Ezrar]

@coder777
Thanks for the quick response and answer,

GetWindowText cannot retrieve the text of a control in another application

What exactly does it mean by that?

Edit: It still doesnt return the title name of some windows (Microsoft Word, NotePad