Automatically capture mouse on windows on mouse down #695
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xStrom
reviewed
Mar 20, 2020
| self.captured_mouse_buttons &= !(1 << (button as u32)); | ||
| if self.captured_mouse_buttons == 0 { | ||
| unsafe { | ||
| ReleaseCapture(); |
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ReleaseCapture can return FALSE in case of error. Let's add some error logging here.
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Good point, added a warn! there :)
…se we'll have called it ourselves and don't require the callback.
teddemunnik
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This pull requests adds functionality on windows to automatically capture mouse when the first mouse button down event is received, and holds the capture until the last mouse button is released, as proposed by @raphlinus in #457. This seemed like the best solution, since the standard behavior on Cocoa is to capture all mouse buttons.
Note that there is one windows specific edge case that still needs to be handled by the app, which is dealing with another app stealing mouse capture. Ideally we should expose this event outside of druid-shell to allow the app to do similar processing to mouse up, for example releasing the scroll bar.