cvi存储txt文本文件

1、在面板中添加一个TextBox控件。

2、代码

static int gLogFile = 0;   
gLogFile = OpenFile("d:\\TestLog.txt",VAL_READ_WRITE,VAL_APPEND,VAL_ASCII); //在初始化程序中
int CVICALLBACK submit (int panel, int control, int event, void *callbackData, int eventData1, int eventData2)
{
	char EndBuf[128] = {'\0'};   
	char Buf[10][1024];//最好用动态分配内存
	
	int length = 0;
	int row = 0;
	int i = 0, j = 0;
	switch (event)
	{
	    case EVENT_COMMIT:
       		//Buf[0] = GetKeyPressEventCharacter (eventData2);      //获得按键信息
			GetNumTextBoxLines (panelHandle, PANEL_TEXTBOX, &row);//获取文本控件行数
			GetTextBoxLineLength (panelHandle, PANEL_TEXTBOX, 0, &length);//获取每一行字符串长度

			for(i = 0; i < row; i++)
			{
				GetTextBoxLine (panelHandle, PANEL_TEXTBOX, i, &Buf[i][0]);
				WriteLine(gLogFile,&Buf[i][0],lstrlen(Buf[i])); 
			}
			
			lstrcat(EndBuf, "\r\n");
			lstrcat(EndBuf, "<---");
			lstrcat(EndBuf, TimeStr());
			lstrcat(EndBuf, "--->");   			
			lstrcat(EndBuf, "\r\n"); 
			WriteLine(gLogFile, EndBuf, sizeof(EndBuf));    	   
	   break;
	}
	return 0;
}
int CVICALLBACK Read (int panel, int control, int event,void *callbackData, int eventData1, int eventData2)
{    char ReadBuf[50][128] = {'\0'}; 
int i = 0, j = 0;   
int rtvalue = 0;
switch (event)
{
	case EVENT_COMMIT:

		
			while(1)
			{
				rtvalue = ReadLine (gLogFile, &ReadBuf[i][0], 20);
			
				if(rtvalue == -2)	
				{
					break;	
				}
				
				printf("ReadBuf: %s\r\n", &ReadBuf[i][0]);
				
				i++;
			}
			
			for(j = 0; j < i; j++)
			{
				InsertTextBoxLine (panelHandle, PANEL_TEXTBOX, j, ReadBuf[j]);  
			}
	
		break;
}
return 0;

}

3、效果