要讓文本控件實時顯示變化的數(shù)，不能直接賦值，否則會死機，需要將變量轉(zhuǎn)換成字符串再發(fā)送給文本控件，步驟很簡單。
功能：兩個按鍵實現(xiàn)文本控件的數(shù)字加減變化。
第一步：定義全局變量（不能定義局部變量，因為窗口重繪時候會將變量初始化）
char buf[2];
int i=0;
第二步：在static void _cbDialog(WM_MESSAGE * pMsg)函數(shù)里里面定義WM_HWIN hWin = pMsg->hWin;
第三步：在按鍵里面添加自己的代碼（我采用按鍵按下執(zhí)行變量加或者減一）：
（其實就是將變量存入數(shù)組中，將變量轉(zhuǎn)換成字符串，然后賦給TEXT_SetText
i++;if(i>59) i=0;
sprintf(buf, "%2d", i);
TEXT_SetText(WM_GetDialogItem(hWin,ID_TEXT_0), buf);
界面用 GUI_Builder建立，添加兩個按鈕和一個文本框TEXT，然后導(dǎo)入到代碼工程里，
在main.c中申明一下函數(shù)void ButtonUse_Demo(void);
然后在任務(wù)里運行ButtonUse_Demo(); 即可。（我用UCOSII系統(tǒng)）
感謝ALIENTEK技術(shù)交流群的網(wǎng)友 神散形不散tnx@139.com(673882715) 的大力幫助，在此特地發(fā)表此文章，幫組初學EMWIN系統(tǒng)的孩子們能快速進入實戰(zhàn)，省去自己摸索的時間。
//實例代碼
#include "DIALOG.h"
#define ID_FRAMEWIN_0 (GUI_ID_USER + 0x04)
#define ID_BUTTON_0 (GUI_ID_USER + 0x05)
#define ID_BUTTON_1 (GUI_ID_USER + 0x06)
#define ID_TEXT_0 (GUI_ID_USER + 0x07)
char buf[2];
int i=0;
static const GUI_WIDGET_CREATE_INFO _aDialogCreate[] = {
{ FRAMEWIN_CreateIndirect, "Framewin", ID_FRAMEWIN_0, 4, 18, 216, 239, 0, 0x0, 0 },
{ BUTTON_CreateIndirect, "Button", ID_BUTTON_0, 117, 127, 70, 90, 0, 0x0, 0 },
{ BUTTON_CreateIndirect, "Button", ID_BUTTON_1, 11, 127, 70, 90, 0, 0x0, 0 },
{ TEXT_CreateIndirect, "Text", ID_TEXT_0, 63, 11, 121, 89, 0, 0x64, 0 },
};
static void _cbDialog(WM_MESSAGE * pMsg)
{
WM_HWIN hItem;
int NCode;
int Id;
WM_HWIN hWin = pMsg->hWin;
switch (pMsg->MsgId)
{
case WM_INIT_DIALOG:
// Initialization of 'Button'
hItem = WM_GetDialogItem(pMsg->hWin, ID_BUTTON_0);
BUTTON_SetText(hItem, "+");
BUTTON_SetFont(hItem, GUI_FONT_D48X64);
// Initialization of 'Button'
hItem = WM_GetDialogItem(pMsg->hWin, ID_BUTTON_1);
BUTTON_SetText(hItem, "-");
BUTTON_SetFont(hItem, GUI_FONT_D48X64);
// Initialization of 'Text'
hItem = WM_GetDialogItem(pMsg->hWin, ID_TEXT_0);
TEXT_SetText(hItem, " 0");
TEXT_SetFont(hItem, GUI_FONT_D60X80);
TEXT_SetTextColor(hItem, 0x000000FF);
break;
case WM_NOTIFY_PARENT:
Id = WM_GetId(pMsg->hWinSrc);
NCode = pMsg->Data.v;
switch(Id)
{
case ID_BUTTON_0: // Notifications sent by 'Button'
switch(NCode)
{
case WM_NOTIFICATION_CLICKED:
i++;
if(i>59) i=0;
sprintf(buf, "%2d", i);
TEXT_SetText(WM_GetDialogItem(hWin,ID_TEXT_0), buf);
break;
case WM_NOTIFICATION_RELEASED:
break;
}
break;
case ID_BUTTON_1: // Notifications sent by 'Button'
switch(NCode)
{
case WM_NOTIFICATION_CLICKED:
i--;
if(i<0) i=59;
sprintf(buf, "%2d", i);
TEXT_SetText(WM_GetDialogItem(hWin,ID_TEXT_0), buf);
break;
case WM_NOTIFICATION_RELEASED:
break;
}
break;
}
break;
default:
WM_DefaultProc(pMsg);
break;
}
}
//創(chuàng)建一個對話框
WM_HWIN CreateFramewin(void)
{
WM_HWIN hWin;
hWin = GUI_CreateDialogBox(_aDialogCreate, GUI_COUNTOF(_aDialogCreate), _cbDialog, WM_HBKWIN, 0, 0);
return hWin;
}
//BUTTO演示函數(shù)
void ButtonUse_Demo(void)
{
WM_HWIN hWin;
hWin=CreateFramewin();
while(1)
{
GUI_Delay(100);
}
}
//附圖
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