Open Bug 1693240 Opened 4 years ago

`nsIWidget::SynthesizeNativeMouseEvent` does not handle modifiers on Windows

Categories

(Testing :: Mochitest, defect, P3)

Product:
Testing
Component:
Mochitest
Version:
Default
Platform:
Desktop
Windows
Type:
defect

Tracking

(Not tracked)

People

(Reporter: masayuki, Unassigned)

References

(Blocks 1 open bug)

Details

On Windows, nsIWidget::SynthesizeNativeMouseEvent does not handle modifiers. However, it may be difficult to handle it. SendInput API posts a mouse input, i.e., it synthesizes mouse event asynchronously. And when using MOUSEEVENTF_MOVE, the WM_MOUSEMOVE message may be coalesced by Windows. Therefore, we need some tricks to handle modifiers in it.

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