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Updates SDL_SetEventFilter code snippet to SDL3

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SDL_EventFilter points to a function that now returns a bool
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Max 2025-01-30 14:48:31 +01:00 • committed by Sam Lantinga
parent 3fd61b0535
commit 817260c73d
2 changed files with 16 additions and 16 deletions
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16
docs/README-android.md
View file

@ -242,7 +242,7 @@ not give you any processing time after the events are delivered.
e.g. e.g.
int HandleAppEvents(void *userdata, SDL_Event *event) bool HandleAppEvents(void *userdata, SDL_Event *event)
{ {
switch (event->type) switch (event->type)
{ {
@ -250,12 +250,12 @@ e.g.
/* Terminate the app. /* Terminate the app.
Shut everything down before returning from this function. Shut everything down before returning from this function.
*/ */
return 0; return false;
case SDL_EVENT_LOW_MEMORY: case SDL_EVENT_LOW_MEMORY:
/* You will get this when your app is paused and iOS wants more memory. /* You will get this when your app is paused and iOS wants more memory.
Release as much memory as possible. Release as much memory as possible.
*/ */
return 0; return false;
case SDL_EVENT_WILL_ENTER_BACKGROUND: case SDL_EVENT_WILL_ENTER_BACKGROUND:
/* Prepare your app to go into the background. Stop loops, etc. /* Prepare your app to go into the background. Stop loops, etc.
This gets called when the user hits the home button, or gets a call. This gets called when the user hits the home button, or gets a call.
@ -264,15 +264,15 @@ e.g.
in addition, you should set the render target to NULL, if you're using in addition, you should set the render target to NULL, if you're using
it, e.g. call SDL_SetRenderTarget(renderer, NULL). it, e.g. call SDL_SetRenderTarget(renderer, NULL).
*/ */
return 0; return false;
case SDL_EVENT_DID_ENTER_BACKGROUND: case SDL_EVENT_DID_ENTER_BACKGROUND:
/* Your app is NOT active at this point. */ /* Your app is NOT active at this point. */
return 0; return false;
case SDL_EVENT_WILL_ENTER_FOREGROUND: case SDL_EVENT_WILL_ENTER_FOREGROUND:
/* This call happens when your app is coming back to the foreground. /* This call happens when your app is coming back to the foreground.
Restore all your state here. Restore all your state here.
*/ */
return 0; return false;
case SDL_EVENT_DID_ENTER_FOREGROUND: case SDL_EVENT_DID_ENTER_FOREGROUND:
/* Restart your loops here. /* Restart your loops here.
Your app is interactive and getting CPU again. Your app is interactive and getting CPU again.
@ -283,10 +283,10 @@ e.g.
event SDL_EVENT_RENDER_DEVICE_RESET and recreate your OpenGL context and event SDL_EVENT_RENDER_DEVICE_RESET and recreate your OpenGL context and
restore your textures when you get it, or quit the app. restore your textures when you get it, or quit the app.
*/ */
return 0; return false;
default: default:
/* No special processing, add it to the event queue */ /* No special processing, add it to the event queue */
return 1; return true;
} }
} }

16
docs/README-ios.md
View file

@ -65,7 +65,7 @@ not give you any processing time after the events are delivered.
e.g. e.g.
int HandleAppEvents(void *userdata, SDL_Event *event) bool HandleAppEvents(void *userdata, SDL_Event *event)
{ {
switch (event->type) switch (event->type)
{ {
@ -73,37 +73,37 @@ e.g.
/* Terminate the app. /* Terminate the app.
Shut everything down before returning from this function. Shut everything down before returning from this function.
*/ */
return 0; return false;
case SDL_EVENT_LOW_MEMORY: case SDL_EVENT_LOW_MEMORY:
/* You will get this when your app is paused and iOS wants more memory. /* You will get this when your app is paused and iOS wants more memory.
Release as much memory as possible. Release as much memory as possible.
*/ */
return 0; return false;
case SDL_EVENT_WILL_ENTER_BACKGROUND: case SDL_EVENT_WILL_ENTER_BACKGROUND:
/* Prepare your app to go into the background. Stop loops, etc. /* Prepare your app to go into the background. Stop loops, etc.
This gets called when the user hits the home button, or gets a call. This gets called when the user hits the home button, or gets a call.
*/ */
return 0; return false;
case SDL_EVENT_DID_ENTER_BACKGROUND: case SDL_EVENT_DID_ENTER_BACKGROUND:
/* This will get called if the user accepted whatever sent your app to the background. /* This will get called if the user accepted whatever sent your app to the background.
If the user got a phone call and canceled it, you'll instead get an SDL_EVENT_DID_ENTER_FOREGROUND event and restart your loops. If the user got a phone call and canceled it, you'll instead get an SDL_EVENT_DID_ENTER_FOREGROUND event and restart your loops.
When you get this, you have 5 seconds to save all your state or the app will be terminated. When you get this, you have 5 seconds to save all your state or the app will be terminated.
Your app is NOT active at this point. Your app is NOT active at this point.
*/ */
return 0; return false;
case SDL_EVENT_WILL_ENTER_FOREGROUND: case SDL_EVENT_WILL_ENTER_FOREGROUND:
/* This call happens when your app is coming back to the foreground. /* This call happens when your app is coming back to the foreground.
Restore all your state here. Restore all your state here.
*/ */
return 0; return false;
case SDL_EVENT_DID_ENTER_FOREGROUND: case SDL_EVENT_DID_ENTER_FOREGROUND:
/* Restart your loops here. /* Restart your loops here.
Your app is interactive and getting CPU again. Your app is interactive and getting CPU again.
*/ */
return 0; return false;
default: default:
/* No special processing, add it to the event queue */ /* No special processing, add it to the event queue */
return 1; return true;
} }
} }