[EMAIL PROTECTED] wrote: > >I'm a beginning-to-intermediate Python programmer with some experience >in other languages. At the moment I am trying to write a Python >program that will run in the background and execute a series of >commands whenever I switch between windows (my OS is Windows XP). For >example, I want my program to do something when I switch to my Firefox >browser, and then do something else when I switch to a certain sub- >window in Photoshop (which has a certain title, and a certain photo >associated with it), then do yet another thing when I switch to >another sub-window (with a different title and photo) within >Photoshop. >The particular actions will be based on the window's title. I've >already figured out how to retrieve that, using >GetWindowText(GetForegroundWindow()) from the win32gui module. >My question is, how can I detect when the user switches between >windows? I haven't been able to figure that part out yet. >Searching the group didn't give me any answers.
The way you do this is to write a Windows hook. The WH_CBT hook intercepts WM_ACTIVATE and WM_DEACTIVATE calls system-wide. However, that requires injecting the hook DLL into every process with a Windows, and you certainly don't want to do that in Python. Write a minimal C DLL to be the hook, and have it send messages to your Python process. -- Tim Roberts, [EMAIL PROTECTED] Providenza & Boekelheide, Inc. -- http://mail.python.org/mailman/listinfo/python-list
