SDL3 Changes to key codes breaks the SDL3 backend build. #7761
Description
Version/Branch of Dear ImGui:
Version 1.90.9, Branch: docking
Back-ends:
imgui_impl_SDL3.cpp + imgui_impl_OpenGL3.cpp
Compiler, OS:
Linux + GCC 14.1.1
Full config/build information:
Dear ImGui 1.90.9 (19090)
--------------------------------
sizeof(size_t): 8, sizeof(ImDrawIdx): 2, sizeof(ImDrawVert): 20
define: __cplusplus=202302
define: __linux__
define: __GNUC__=14
define: IMGUI_HAS_VIEWPORT
define: IMGUI_HAS_DOCK
--------------------------------
io.BackendPlatformName: imgui_impl_sdl3
io.BackendRendererName: imgui_impl_opengl3
io.ConfigFlags: 0x00000480
DockingEnable
ViewportsEnable
io.ConfigViewportsNoDecoration
io.ConfigInputTextCursorBlink
io.ConfigWindowsResizeFromEdges
io.ConfigMemoryCompactTimer = 60.0
io.BackendFlags: 0x00001C0E
HasMouseCursors
HasSetMousePos
PlatformHasViewports
HasMouseHoveredViewport
RendererHasVtxOffset
RendererHasViewports
--------------------------------
io.Fonts: 8 fonts, Flags: 0x00000000, TexSize: 512,1024
io.DisplaySize: 1024.00,768.00
io.DisplayFramebufferScale: 1.00,1.00
--------------------------------
style.WindowPadding: 1.00,1.00
style.WindowBorderSize: 1.00
style.FramePadding: 4.00,3.00
style.FrameRounding: 3.00
style.FrameBorderSize: 0.00
style.ItemSpacing: 8.00,4.00
style.ItemInnerSpacing: 4.00,4.00
Details:
The latest SDL3 commit has removed keypad symbols ( SDLK_KP_?? ) and changed the symbols SDLK_a -> SDLK_z to uppercase. ie. SDLK_A -> SDLK_Z. These are used in the SDL3 backend implementation.
The Relevant SDL commits are -
Renamed SDLK_a-z to SDLK_A-Z
Made the symbols uppercase for consistency with the other SDLK_* constants, but the values are still lowercase.
and
Numpad scancodes have non-numpad keycodes
This allows the numpad to work as the user expects based on the numlock state. If the application needs to distinguish the keys, it can check to see whether the scancode is a numpad key or not.
This affects Lines 196-212 and 232-257 in imgui_impl_sdl3.cpp.
Screenshots/Video:
No response
Minimal, Complete and Verifiable Example code:
No response