SDL Wiki
(This is the legacy documentation for stable SDL2, the current stable version; SDL3 is the current development version.)


A variable controlling whether relative mouse mode constrains the mouse to the center of the window

Header File

Defined in SDL_hints.h




This variable can be set to the following values:

Constraining to the center of the window works better for FPS games and when the application is running over RDP. Constraining to the whole window works better for 2D games and increases the chance that the mouse will be in the correct position when using high DPI mice.

By default SDL will constrain the mouse to the center of the window

CategoryAPI, CategoryAPIMacro, CategoryHints

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