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Determine whether or not an SDL3 monitor ID is valid using SDL_GetDisplayProperties()

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On the SDL3 backend, when a laptop is connected to an external monitor and then the laptop lid is closed, the original SDL3 monitor ID for the laptop's monitor is invalidated and replaced with a monitor ID that exceeds the total amount of monitors upon reopening the laptop lid. Many of Raylib's functions in the file "rcore_desktop_sdl.c" do not properly handle such a situation, as they return an error message and do not actually run when the following condition is met:

#if defined(USING_VERSION_SDL3)
if((monitor > 0) && (monitor <= monitorCount))

I think the monitor number ("monitor") should be validated not against the monitor count, but rather the code should attempt to call the SDL3 function "SDL_GetDisplayProperties(monitor)", passing in the monitor id ("monitor"). This function returns a valid property ID on success or 0 on failure, so a returned value other than zero tells you that the monitor id is valid.

see this link for more details: https://wiki.libsdl.org/SDL3/SDL_GetDisplayProperties
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NoNameAuthenticated 2025-11-04 00:05:01 -05:00 committed by GitHub
parent 79e4847d93
commit 5c84c552cf
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1 changed files with 13 additions and 26 deletions
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39
src/platforms/rcore_desktop_sdl.c
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@ -463,8 +463,7 @@ void ToggleFullscreen(void)
const int monitorCount = SDL_GetNumVideoDisplays();
#if defined(USING_VERSION_SDL3) // SDL3 Migration: Monitor is an id instead of index now, returns 0 on failure
SDL_Rect displayBoundsRect; // Different SDL_Rect variable from displayBounds to avoid overwriting it
if (SDL_GetDisplayUsableBounds(monitor, &displayBoundsRect)) // Returns true on success, which confirms that the monitor is valid
if (SDL_GetDisplayProperties(monitor) != 0) // Returns 0 on failure, so a value other than zero indicates that the monitor id is valid
#else
if ((monitor >= 0) && (monitor < monitorCount))
#endif
@ -492,8 +491,7 @@ void ToggleBorderlessWindowed(void)
const int monitorCount = SDL_GetNumVideoDisplays();
#if defined(USING_VERSION_SDL3) // SDL3 Migration: Monitor is an id instead of index now, returns 0 on failure
SDL_Rect displayBoundsRect; // Different SDL_Rect variable from displayBounds to avoid overwriting it
if (SDL_GetDisplayUsableBounds(monitor, &displayBoundsRect)) // Returns true on success, which confirms that the monitor is valid
if (SDL_GetDisplayProperties(monitor) != 0) // Returns 0 on failure, so a value other than zero indicates that the monitor id is valid
#else
if ((monitor >= 0) && (monitor < monitorCount))
#endif
@ -550,8 +548,7 @@ void SetWindowState(unsigned int flags)
const int monitorCount = SDL_GetNumVideoDisplays();
#if defined(USING_VERSION_SDL3) // SDL3 Migration: Monitor is an id instead of index now, returns 0 on failure
SDL_Rect displayBoundsRect; // Different SDL_Rect variable from displayBounds to avoid overwriting it
if (SDL_GetDisplayUsableBounds(monitor, &displayBoundsRect)) // Returns true on success, which confirms that the monitor is valid
if (SDL_GetDisplayProperties(monitor) != 0) // Returns 0 on failure, so a value other than zero indicates that the monitor id is valid
#else
if ((monitor >= 0) && (monitor < monitorCount))
#endif
@ -615,8 +612,7 @@ void SetWindowState(unsigned int flags)
const int monitorCount = SDL_GetNumVideoDisplays();
#if defined(USING_VERSION_SDL3) // SDL3 Migration: Monitor is an id instead of index now, returns 0 on failure
SDL_Rect displayBoundsRect; // Different SDL_Rect variable from displayBounds to avoid overwriting it
if (SDL_GetDisplayUsableBounds(monitor, &displayBoundsRect)) // Returns true on success, which confirms that the monitor is valid
if (SDL_GetDisplayProperties(monitor) != 0) // Returns 0 on failure, so a value other than zero indicates that the monitor id is valid
#else
if ((monitor >= 0) && (monitor < monitorCount))
#endif
@ -837,8 +833,7 @@ void SetWindowMonitor(int monitor)
{
const int monitorCount = SDL_GetNumVideoDisplays();
#if defined(USING_VERSION_SDL3) // SDL3 Migration: Monitor is an id instead of index now, returns 0 on failure
SDL_Rect displayBoundsRect; // Different SDL_Rect variable from displayBounds to avoid overwriting it
if (SDL_GetDisplayUsableBounds(monitor, &displayBoundsRect)) // Returns true on success, which confirms that the monitor is valid
if (SDL_GetDisplayProperties(monitor) != 0) // Returns 0 on failure, so a value other than zero indicates that the monitor id is valid
#else
if ((monitor >= 0) && (monitor < monitorCount))
#endif
@ -854,8 +849,7 @@ void SetWindowMonitor(int monitor)
SDL_Rect usableBounds;
#if defined(USING_VERSION_SDL3) // Different style for success checking
SDL_Rect displayBoundsRect; // Different SDL_Rect variable from displayBounds to avoid overwriting it
if (SDL_GetDisplayUsableBounds(monitor, &usableBounds)) // Returns true on success, which confirms that the monitor is valid
if (SDL_GetDisplayUsableBounds(monitor, &usableBounds))
#else
if (SDL_GetDisplayUsableBounds(monitor, &usableBounds) == 0)
#endif
@ -967,8 +961,7 @@ Vector2 GetMonitorPosition(int monitor)
{
const int monitorCount = SDL_GetNumVideoDisplays();
#if defined(USING_VERSION_SDL3) // SDL3 Migration: Monitor is an id instead of index now, returns 0 on failure
SDL_Rect displayBoundsRect; // Different SDL_Rect variable from displayBounds to avoid overwriting it
if (SDL_GetDisplayUsableBounds(monitor, &displayBoundsRect)) // Returns true on success, which confirms that the monitor is valid
if (SDL_GetDisplayProperties(monitor) != 0) // Returns 0 on failure, so a value other than zero indicates that the monitor id is valid
#else
if ((monitor >= 0) && (monitor < monitorCount))
#endif
@ -996,8 +989,7 @@ int GetMonitorWidth(int monitor)
const int monitorCount = SDL_GetNumVideoDisplays();
#if defined(USING_VERSION_SDL3) // SDL3 Migration: Monitor is an id instead of index now, returns 0 on failure
SDL_Rect displayBoundsRect; // Different SDL_Rect variable from displayBounds to avoid overwriting it
if (SDL_GetDisplayUsableBounds(monitor, &displayBoundsRect)) // Returns true on success, which confirms that the monitor is valid
if (SDL_GetDisplayProperties(monitor) != 0) // Returns 0 on failure, so a value other than zero indicates that the monitor id is valid
#else
if ((monitor >= 0) && (monitor < monitorCount))
#endif
@ -1018,8 +1010,7 @@ int GetMonitorHeight(int monitor)
const int monitorCount = SDL_GetNumVideoDisplays();
#if defined(USING_VERSION_SDL3) // SDL3 Migration: Monitor is an id instead of index now, returns 0 on failure
SDL_Rect displayBoundsRect; // Different SDL_Rect variable from displayBounds to avoid overwriting it
if (SDL_GetDisplayUsableBounds(monitor, &displayBoundsRect)) // Returns true on success, which confirms that the monitor is valid
if (SDL_GetDisplayProperties(monitor) != 0) // Returns 0 on failure, so a value other than zero indicates that the monitor id is valid
#else
if ((monitor >= 0) && (monitor < monitorCount))
#endif
@ -1040,8 +1031,7 @@ int GetMonitorPhysicalWidth(int monitor)
const int monitorCount = SDL_GetNumVideoDisplays();
#if defined(USING_VERSION_SDL3) // SDL3 Migration: Monitor is an id instead of index now, returns 0 on failure
SDL_Rect displayBoundsRect; // Different SDL_Rect variable from displayBounds to avoid overwriting it
if (SDL_GetDisplayUsableBounds(monitor, &displayBoundsRect)) // Returns true on success, which confirms that the monitor is valid
if (SDL_GetDisplayProperties(monitor) != 0) // Returns 0 on failure, so a value other than zero indicates that the monitor id is valid
#else
if ((monitor >= 0) && (monitor < monitorCount))
#endif
@ -1065,8 +1055,7 @@ int GetMonitorPhysicalHeight(int monitor)
const int monitorCount = SDL_GetNumVideoDisplays();
#if defined(USING_VERSION_SDL3) // SDL3 Migration: Monitor is an id instead of index now, returns 0 on failure
SDL_Rect displayBoundsRect; // Different SDL_Rect variable from displayBounds to avoid overwriting it
if (SDL_GetDisplayUsableBounds(monitor, &displayBoundsRect)) // Returns true on success, which confirms that the monitor is valid
if (SDL_GetDisplayProperties(monitor) != 0) // Returns 0 on failure, so a value other than zero indicates that the monitor id is valid
#else
if ((monitor >= 0) && (monitor < monitorCount))
#endif
@ -1090,8 +1079,7 @@ int GetMonitorRefreshRate(int monitor)
const int monitorCount = SDL_GetNumVideoDisplays();
#if defined(USING_VERSION_SDL3) // SDL3 Migration: Monitor is an id instead of index now, returns 0 on failure
SDL_Rect displayBoundsRect; // Different SDL_Rect variable from displayBounds to avoid overwriting it
if (SDL_GetDisplayUsableBounds(monitor, &displayBoundsRect)) // Returns true on success, which confirms that the monitor is valid
if (SDL_GetDisplayProperties(monitor) != 0) // Returns 0 on failure, so a value other than zero indicates that the monitor id is valid
#else
if ((monitor >= 0) && (monitor < monitorCount))
#endif
@ -1111,8 +1099,7 @@ const char *GetMonitorName(int monitor)
const int monitorCount = SDL_GetNumVideoDisplays();
#if defined(USING_VERSION_SDL3) // SDL3 Migration: Monitor is an id instead of index now, returns 0 on failure
SDL_Rect displayBoundsRect; // Different SDL_Rect variable from displayBounds to avoid overwriting it
if (SDL_GetDisplayUsableBounds(monitor, &displayBoundsRect)) // Returns true on success, which confirms that the monitor is valid
if (SDL_GetDisplayProperties(monitor) != 0) // Returns 0 on failure, so a value other than zero indicates that the monitor id is valid
#else
if ((monitor >= 0) && (monitor < monitorCount))
#endif