Detect if mouse is at the edge or outside of the game window (such as on the top window bar) and force show mouse about defos HOT 14 CLOSED

I booted up into Windows and apparently it's all fine. WM_MOUSELEAVE correctly only tracks the client area. Also tested hiding the mouse on_mouse_enter and showing it on_mouse_leave and it works beautifully on both Windows and macOS, allowing you to resize. I guess I'll close this, then.

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Hard week, I'll back to this issue after next week

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Then we have to provide a update method so that we are enble to do checking.
How about provide a method like is_mouse_exiting to developer, so that they can determine if they need to enable/disable the cursor by calling existing method.

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That's a good idea is_mouse_cursor_within_window maybe?

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I started Window support here

https://github.com/subsoap/defos/tree/is_mouse_cursor_within_window

@chaosddp could you test this? It seems a bit problematic and I'm not sure how to improve it.. The issue is that it's fast and good at detecting if the mouse cursor is well outside the window but seems buggy within sometimes constantly reporting true/false, and seems to have issues on the window edges.

@AGulev could you add Mac support? Is Mac support needed? It is on Windows because the cursor will hide still if the mouse is on the title/edges which makes resizing a pain.

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@subsoap I've tested on my Windows 10.

1. the detect bound should exclude the titlebar, it seems like 32 pixel high?
2. When i trying to move the cursor into the window, it was disappeared near the edge, but not exactly on the edge(red rectangle in following image), so still cannot resize the window easily. Maybe caused by window shadow effect?
   How about add a buffer to the detect bound, or make it as parameter to set the bound?

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@chaosddp If you move your mouse around inside the window does it consistently say it's within the client window or does it sometimes say it's outside of the client window sometimes even while inside?

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@subsoap only near the edge in the window, it will switch between in/outside for several time, then it will be stable if i do not move the mouse

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@chaosddp I think there may be a better approach that's possible for detecting mouse within client window with what we have available. I'll need to do some more reading and testing.

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@chaosddp I don't have progress on this yet, any ideas?

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@subsoap sorry so late, how about SetWindowLongPtr to hook the mouse in/out event, i have not try this on defold game yet.

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@chaosddp could you try that?

Another option is using GLFW functions directly #36

We've been warned to not use GLFW functions because they might remove them at any point but our main goal should be to make these features work so people can publish games and adapt over time if necessary.

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Oh. I haven't tested for that behavior on Windows. On macOS that's how it works because I added a tracking rectangle on the NSView, not the NSWindow, so the title bar should be considered outside the window.

I found this:
https://stackoverflow.com/questions/5629613/hide-cursor-in-client-rectangle-but-not-on-title-bar

Maybe changing the Windows code to use this instead of / in tandem with WM_LEAVE would help?

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I think I'll give it a go

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