Hiding mouse cursor

Question

I am using bgfx in c99 to experiment with game dev / game engine dev, so I need to hide my cursor using Windows.h / WinUser.h

However even if I use ShowCursor(false), SetCursor(NULL) the cursor will still appear on screen.

None of the solutions I tried worked. Any help ? Thanks

This doesn't appear to have anything to do with C99 and everything to do with Windows/Winapi — Lundin, Jun 01 '22 at 13:37
What version of windows are you testing on? Does `ShowCursor` return something? Did you try to call `GetLastError()`? — Mathieu, Jun 01 '22 at 14:17
@Mathieu `ShowCursor()` doesn't use `GetLastError()` to report problems. — Remy Lebeau, Jun 01 '22 at 21:00
@Mathieu W11. I never checked what ShowCursor returned tho, I'll give it a try. — Edorion, Jun 01 '22 at 21:44

YangXiaoPo-MSFT · Answer 1 · 2022-06-02T03:01:37.280

-1

According to SetCursor,

The cursor is a shared resource. A window should set the cursor shape only when the cursor is in its client area or when the window is capturing mouse input. In systems without a mouse, the window should restore the previous cursor before the cursor leaves the client area or before it relinquishes control to another window.

If your application must set the cursor while it is in a window, make sure the class cursor for the specified window's class is set to NULL.(SetClassLong) If the class cursor is not NULL, the system restores the class cursor each time the mouse is moved.

ShowCursor sets an internal display counter that determines whether the cursor should be displayed.(Application-Oriented,Tried) The cursor is displayed only if the display count is greater than or equal to 0. If a mouse is installed, the initial display count is 0. If no mouse is installed, the display count is –1.

edited Jun 02 '22 at 03:01

answered Jun 02 '22 at 02:22

YangXiaoPo-MSFT

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I knew about the ShowCursor thing, tried using it in a loop until the display count was -1, didn't do a thing. However I didn't know about SetClassLong, I'll try – Edorion Jun 02 '22 at 10:08
`SetClassLong(nwh, GCLP_HCURSOR, NULL)` didn't work in my case. – Edorion Jun 02 '22 at 10:51
@Edorion A console application? – YangXiaoPo-MSFT Jun 03 '22 at 00:52

Hiding mouse cursor

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