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Win32: Fix scancode and key for Alt+PrtSc events

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Alt+PrtSc emits a different scancode than just PrtSc.  Since the GLFW
API assumes each key corresponds to only one scancode, this cannot be
added to the keycodes array.

Instead we replace the scancode at the point of entry.

Fixes #1993

(cherry picked from commit 03cfe957e7)
This commit is contained in:
Camilla Löwy 2022-03-15 19:12:29 +01:00
parent c2188e2d0a
commit 32df2ed716
3 changed files with 7 additions and 1 deletions
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1
CONTRIBUTORS.md
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@ -69,6 +69,7 @@ video tutorials.
- Ryan C. Gordon - Ryan C. Gordon
- Stephen Gowen - Stephen Gowen
- Kovid Goyal - Kovid Goyal
- Kevin Grandemange
- Eloi Marín Gratacós - Eloi Marín Gratacós
- Stefan Gustavson - Stefan Gustavson
- Andrew Gutekanst - Andrew Gutekanst

3
README.md
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@ -123,7 +123,8 @@ information on what to include when reporting a bug.
## Changelog ## Changelog
There is nothing here yet. - [Win32] Bugfix: `Alt+PrtSc` would emit `GLFW_KEY_UNKNOWN` and a different
scancode than `PrtSc` (#1993)
## Contact ## Contact

4
src/win32_window.c
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@ -748,6 +748,10 @@ static LRESULT CALLBACK windowProc(HWND hWnd, UINT uMsg,
scancode = MapVirtualKeyW((UINT) wParam, MAPVK_VK_TO_VSC); scancode = MapVirtualKeyW((UINT) wParam, MAPVK_VK_TO_VSC);
} }
// HACK: Alt+PrtSc has a different scancode than just PrtSc
if (scancode == 0x54)
scancode = 0x137;
key = _glfw.win32.keycodes[scancode]; key = _glfw.win32.keycodes[scancode];
// The Ctrl keys require special handling // The Ctrl keys require special handling