www.pudn.com > uC-GUI-V3-98.zip > WIDGET_Edit.c

/* 
********************************************************************************************************* 
*                                             uC/GUI V3.98 
*                        Universal graphic software for embedded applications 
* 
*                       (c) Copyright 2002, Micrium Inc., Weston, FL 
*                       (c) Copyright 2002, SEGGER Microcontroller Systeme GmbH 
* 
*              µC/GUI 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 redistributed 
*              in any way. We appreciate your understanding and fairness. 
* 
---------------------------------------------------------------------- 
File        : WIDGET_Edit.c 
Purpose     : Example demonstrating the use of a EDIT widget 
---------------------------------------------------------------------- 
*/ 
 
#include "GUI.h" 
#include "EDIT.h" 
 
/******************************************************************* 
* 
*       static code 
* 
******************************************************************** 
*/ 
 
/******************************************************************* 
* 
*       _DemoEdit 
* 
  Edit a string until ESC or ENTER is pressed 
*/ 
static void _DemoEdit(void) { 
  EDIT_Handle hEdit; 
  char aBuffer[28]; 
  int Key; 
  GUI_SetBkColor(GUI_BLACK); 
  GUI_Clear(); 
  GUI_SetColor(GUI_WHITE); 
  GUI_SetFont(&GUI_Font24_ASCII); 
  GUI_DispStringHCenterAt("WIDGET_Edit - Sample", 160, 5); 
  GUI_SetFont(&GUI_Font8x16); 
  GUI_DispStringHCenterAt("Use keyboard to modify string...", 160, 90); 
  /* Create edit widget */ 
  hEdit = EDIT_Create( 50, 110, 220, 25, ' ', sizeof(aBuffer), 0 ); 
  /* Modify edit widget */ 
  EDIT_SetText(hEdit, "Press  when done..."); 
  EDIT_SetFont(hEdit, &GUI_Font8x16); 
  EDIT_SetTextColor(hEdit, 0, GUI_RED); 
  /* Set keyboard focus to edit widget */ 
  WM_SetFocus(hEdit); 
  /* Handle keyboard until ESC or ENTER is pressed */ 
  do { 
    WM_Exec(); 
    Key = GUI_GetKey(); 
  } while ((Key != GUI_KEY_ENTER) && (Key != GUI_KEY_ESCAPE)); 
  /* Fetch result from edit widget */ 
  if (Key == GUI_KEY_ENTER) { 
    EDIT_GetText(hEdit, aBuffer, sizeof(aBuffer)); 
  } 
  /* Delete the edit widget */ 
  EDIT_Delete(hEdit); 
  GUI_ClearRect(0, 50, 319, 239); 
  /* Display the changed string */ 
  if (Key == GUI_KEY_ENTER) { 
    GUI_Delay(250); 
    GUI_DispStringHCenterAt("The string you have modified is:", 160, 90); 
    GUI_DispStringHCenterAt(aBuffer, 160, 110); 
    GUI_Delay(3000); 
    GUI_ClearRect(0, 50, 319, 239); 
  } 
  GUI_Delay(500); 
} 
 
/******************************************************************* 
* 
*       MainTask 
* 
*       Demonstrates the use of a EDIT widget 
* 
******************************************************************** 
*/ 
 
void MainTask(void) { 
  GUI_Init(); 
  while (1) { 
    _DemoEdit(); 
  } 
}