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Allow trapping the back button so right mouse click can work on some Android systems (thanks Rachel!)

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Also, added a function SDL_AndroidBackButton() so applications can respond to the back button directly
This commit is contained in:
Sam Lantinga 2018-07-12 13:28:13 -07:00
parent c74837fbb9
commit ff8c9538bc
7 changed files with 73 additions and 1 deletions
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17
include/SDL_hints.h
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@ -752,6 +752,23 @@ extern "C" {
*/
#define SDL_HINT_ANDROID_SEPARATE_MOUSE_AND_TOUCH "SDL_ANDROID_SEPARATE_MOUSE_AND_TOUCH"
/**
* \brief A variable to control whether we trap the Android back button to handle it manually.
* This is necessary for the right mouse button to work on some Android devices, or
* to be able to trap the back button for use in your code reliably. If set to true,
* the back button will show up as an SDL_KEYDOWN / SDL_KEYUP pair with a keycode of
* SDL_SCANCODE_AC_BACK.
*
* The variable can be set to the following values:
* "0" - Back button will be handled as usual for system. (default)
* "1" - Back button will be trapped, allowing you to handle the key press
* manually. (This will also let right mouse click work on systems
* where the right mouse button functions as back.)
*
* The value of this hint is used at runtime, so it can be changed at any time.
*/
#define SDL_HINT_ANDROID_TRAP_BACK_BUTTON "SDL_ANDROID_TRAP_BACK_BUTTON"
/**
* \brief A variable to control whether the return key on the soft keyboard
* should hide the soft keyboard on Android and iOS.