Hi guys,

Is it possible to retrieve the parent window of a application without knowing the window handle?

The reason I want to do this, is to get the HWND of the parent window to use in a function, without passing it via function parameter and not setting HWND to a global.

Hoping there is something like GetModuleHandle(NULL), which retrieves the HINSTANCE without having to pass around the HINSTANCE from the main function - if you get my drift.

Thanks in advance

A win32 application can have as many top level windows as it wants, there's no requirement for there to be a 'parent' window. The best you could maybe do is enumerate all top level windows (perhaps something in here might be of help: https://social.msdn.microsoft.com/Forums/en-US/c19a695d-a7d1-42b7-851e-12e98f427b39/can-i-get-all-the-windows-a-process-has?forum=vcgeneral) and filter them by some criteria.

Well, isn't "GetParent" what you want?

https://msdn.microsoft.com/en-us/library/windows/desktop/ms633510(v=vs.85).aspx

I've missed that you dont know the cureent handle. You could try with GetActiveWindow, or if you know the caption of the window FindWindow