API Call (GetWindowTextLength), simple.

[msuryadarma]

Hi. I'm trying to call API to get the length of a Window's title. Here's the code:

I declared these in the Declare Local External Functions space:
--------------------
Function Long GetDesktopWindow() Library "user32.dll"
Function Long GetWindowTextLength(Long hWnd) Library "user32.dll"

Then in the click event of a cb:
--------------------
Long winhandle //container for desktop window's handle
Long textlen //receives length of text of the desktop window

//getting the desktop window's handle. This function WORKS!
winhandle = GetDesktopWindow()

//Find out how many characters are in the window's text.
textlen = GetWindowTextLength(winhandle)


Now I keep getting errors executing GetWindowTextLength. Any ideas? Thanks a lot.

 

[firrip]

There are usually two variants of API functions.
Unicode and standard.
Define GetWindowTextLengthA instead of GetWindowTextLength