How can you know if a control is visible or invisible using Microsoft Active Accessibility

Question

I noticed that AccExplorer (accessibility explorer) shows when controls are visible or invisible. How does it determine this? The api for MSAA does not have a IsVisible function. Any ideas?

Edit: IsWindowVisible does not actually tell you if it has been drawn or not. Even if something is 100% obscuring the window, IsWindowVisible can still return TRUE.

score 0 · Answer 1 · answered Sep 13 '09 at 04:05

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You can test if a window (including controls) is visible with the standard IsWindowVisible() function.

answered Sep 13 '09 at 04:05

Adam Rosenfield

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Cool thanks. The problem was that I didn't know how to get the HWND from IAccessible pointer. I found WindowFromAccessibleObject so I'll be able to use IsWindowVisible. – max Sep 13 '09 at 05:17
IsWindowVisible() is not what I wanted because it returns true even when the object is not actually drawn onscreen. Is there a function that tells me if it actually was drawn or not? – max Sep 29 '09 at 11:41

score 0 · Answer 2 · edited May 23 '17 at 11:47

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This answer suggests using GetWindowPlacement().

edited May 23 '17 at 11:47

Community

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answered Nov 17 '09 at 21:11

Dominic Jodoin

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How can you know if a control is visible or invisible using Microsoft Active Accessibility

2 Answers2