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参考：http://www.ni.com/white-paper/3663/zhs/

结果：

#include 
   
    #include 
    
     #include 
     
      		#include 
      
       #include "test2.h"static int panelHandle;int startFlag=0;// 线程标识  1开始；同时也是OK控件奇偶数次按下的标识int CVICALLBACK DataAcqThreadFunction (void *functionData);	   //线程int main (int argc, char *argv[]){	if (InitCVIRTE (0, argv, 0) == 0)		return -1;	/* out of memory */	if ((panelHandle = LoadPanel (0, "test2.uir", PANEL)) < 0)		return -1;	DisplayPanel (panelHandle);	RunUserInterface ();	DiscardPanel (panelHandle);	return 0;}int CVICALLBACK MainCallBack (int panel, int event, void *callbackData,		int eventData1, int eventData2){	switch (event)	{		case EVENT_GOT_FOCUS:			break;		case EVENT_LOST_FOCUS:			break;		case EVENT_CLOSE:			QuitUserInterface(0);	  //关闭程序			break;	}	return 0;}int CVICALLBACK Calculate (int panel, int control, int event,		void *callbackData, int eventData1, int eventData2){	double a,b;	char ss[100];		switch (event)	{		case EVENT_COMMIT:			GetCtrlVal(panelHandle,PANEL_PARA_A,&a);			GetCtrlVal(panelHandle,PANEL_PARA_B,&b); 			sprintf(ss,"=%f",a+b);			SetCtrlVal(panelHandle,PANEL_RESULT,ss);			break;	}	return 0;}int CVICALLBACK Start (int panel, int control, int event,		void *callbackData, int eventData1, int eventData2){	int functionId;		switch (event)	{		case EVENT_COMMIT:						if(startFlag==0)			{				startFlag=1;				SetCtrlAttribute (panelHandle, PANEL_START, ATTR_LABEL_TEXT, "CANCEL");								CmtScheduleThreadPoolFunction (DEFAULT_THREAD_POOL_HANDLE, DataAcqThreadFunction, NULL, &functionId);//				CmtWaitForThreadPoolFunctionCompletion (DEFAULT_THREAD_POOL_HANDLE, functionId, 0); //辅助线程完成后才回归主线程							}			else			{				startFlag=0;				SetCtrlAttribute (panelHandle, PANEL_START, ATTR_LABEL_TEXT, "START");			}			break;	}	return 0;}int CVICALLBACK DataAcqThreadFunction (void *functionData){	int i=0;	char ss[100];		char output_file[]="data_xxx.csv";	sprintf(output_file,"data_%3d.csv",1); //设置文件名	FILE* fd=fopen(output_file,"w");	//“写”打开文件	if(!fd){			perror("fopen failed!");			return 1;	}	SetCtrlVal(panelHandle, PANEL_COUNT, "0");//这里确实跟MFC不太一样，可以直接访问主线程的控件	    while(1){		i++;        sprintf(ss,"%d",i);		SetCtrlVal(panelHandle, PANEL_COUNT, ss); 		Delay(1); //延迟1s				fprintf(fd,"%ld, ",i);  //输出数据+换格		fprintf(fd,"\n");	  //换行		if(i>1000 || !startFlag){			break;				}    }	fclose(fd);		  //关闭文件	    return 0;}