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William chang
William chang
Associate III
January 16, 2018
Question

no description about GUI_JOYSTICK_StoreState(const GUI_PID_STATE * pState) function usage

  • January 16, 2018
  • 2 replies
  • 749 views
Posted on January 16, 2018 at 03:46

I found this function 'void GUI_JOYSTICK_StoreState(const GUI_PID_STATE * pState);' in GUI.h file which is STemWin library. But I can't find any information about it on STemWin manual. Can somebody explain it for me? 

#stemwin
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2 replies

Imen.D
ST Technical Moderator
February 20, 2018
Posted on February 20, 2018 at 17:13

Hello,

The pointer input devices such as touch screen, mouse or joysticks calls the routine GUI_PID_StoreState.

This note is described in emWin user manual (page 1070) and GUI_PID_StoreState routine is explained.

Pointer input devices are devices such as mice, touch-screens and joysticks. Multiple pointer input devices can be used in a single application to enable simultaneous mouse/touch-screen/joystick use. Basically all a PID driver does is calling the routine GUI_PID_StoreState() whenever an event (such as a moved mouse, or a pressed touch screen) has been detected.

Best Regards,

Imen

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William chang
William changAuthor
Associate III
March 6, 2018
Posted on March 06, 2018 at 09:50

The original emWin manual doesn't have 

GUI_JOYSTICK_StoreState() this function. I found this function in ST project. I think it was added by ST. 

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