Difference between revisions of "CHECKBOX - Usage (Sample)"
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This sample demonstrates the usage of a CHECKBOX widget. |
This sample demonstrates the usage of a CHECKBOX widget. |
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+ | == Demo == |
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+ | <html><iframe src="https://wiki.segger.com/demo/emwin/CHECKBOX_Usage/CHECKBOX_Usage.html" width="480" height="272" style="border: 1px #c0c0c0 solid;" marginwidth="0" marginheight="0" hspace="0" vspace="0" scrolling="no"> </iframe></html> |
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== Code == |
== Code == |
Latest revision as of 16:11, 7 March 2022
CHECKBOX_Usage.c | |
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File(s) required |
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Runs in simulation | Yes |
Runs on target | Yes |
Download | CHECKBOX_Usage.c |
This sample demonstrates the usage of a CHECKBOX widget.
Demo
Code
/*********************************************************************
* SEGGER Microcontroller GmbH *
* Solutions for real time microcontroller applications *
**********************************************************************
* *
* (c) 1996 - 2020 SEGGER Microcontroller GmbH *
* *
* Internet: www.segger.com Support: support@segger.com *
* *
**********************************************************************
** emWin V6.10 - Graphical user interface for embedded applications **
emWin is protected by international copyright laws. Knowledge of the
source code may not be used to write a similar product. This file may
only be used in accordance with a license and should not be re-
distributed in any way. We appreciate your understanding and fairness.
----------------------------------------------------------------------
File : CHECKBOX_Usage.c
Purpose : Sample that demonstrates the usage of CHECKBOX widgets
in emWin.
Requirements: WindowManager - (x)
MemoryDevices - ( )
AntiAliasing - ( )
VNC-Server - ( )
PNG-Library - ( )
TrueTypeFonts - ( )
---------------------------END-OF-HEADER------------------------------
*/
#include "DIALOG.h"
#include <stdio.h>
/*********************************************************************
*
* Defines
*
**********************************************************************
*/
/*********************************************************************
*
* Static code
*
**********************************************************************
*/
/*********************************************************************
*
* _cbWin
*/
static void _cbWin(WM_MESSAGE * pMsg) {
static WM_HWIN hBox;
int NCode, Id;
char acBuffer[32];
int State;
switch(pMsg->MsgId) {
case WM_CREATE:
//
// Create CHECKBOX widget.
//
hBox = CHECKBOX_CreateEx(10, 10, 80, 20, pMsg->hWin, WM_CF_SHOW, 0, GUI_ID_CHECK0);
//
// Edit widget properties.
//
CHECKBOX_SetText(hBox, "Check");
CHECKBOX_SetTextColor(hBox, GUI_BLACK);
CHECKBOX_SetFont(hBox, &GUI_Font16_1);
//
// Set number of possible states to 3 (if needed)
// The minimum number of states is 2 and the maximum is 3.
//
CHECKBOX_SetNumStates(hBox, 3);
//
// Manually set the state
//
CHECKBOX_SetState(hBox, 1);
break;
case WM_PAINT:
GUI_SetBkColor(GUI_WHITE);
GUI_Clear();
//
// Display current CHECKBOX state.
//
GUI_SetFont(&GUI_Font16_1);
GUI_SetColor(GUI_BLACK);
State = CHECKBOX_GetState(hBox);
sprintf(acBuffer, "State of checkbox: %d", State);
GUI_DispStringAt(acBuffer, 10, 50);
break;
case WM_NOTIFY_PARENT:
//
// Get Id of sender window and notification code.
//
Id = WM_GetId(pMsg->hWinSrc);
NCode = pMsg->Data.v;
switch (Id) {
case GUI_ID_CHECK0:
switch(NCode) {
case WM_NOTIFICATION_VALUE_CHANGED:
//
// When the value of the checkbox changed, redraw parent window to update the display of the state.
//
WM_InvalidateWindow(pMsg->hWin);
break;
}
break;
}
break;
default:
WM_DefaultProc(pMsg);
}
}
/*********************************************************************
*
* Public code
*
**********************************************************************
*/
/*********************************************************************
*
* MainTask
*/
void MainTask(void) {
//
// Init GUI.
//
GUI_Init();
//
// Create parent window.
//
WM_CreateWindowAsChild(0, 0, LCD_GetXSize(), LCD_GetYSize(), WM_HBKWIN, WM_CF_SHOW, _cbWin, 0);
while (1) {
GUI_Delay(100);
}
}
/*************************** End of file ****************************/