Reputation: 11

Class name, HWNDs from PID

how do I get class name and HWNDs of a process where only PID is known?

I need to set focus on a particular window of a process.

Upvotes: 1

Answers (1)

Reputation: 24447

There is no way to go directly from PID >> HWND since a PID can own multiple windows. You can however go the other way round.

Enumerate all top-level windows (EnumWindows)
In the callback, get each window's associated PID (GetWindowThreadProcessId) and class name (GetClassName)
If it's a match, set the focus (SetForegroundWindow)

Upvotes: 6