sample3_1.c

经典LabWindows CVI方面的教材《LabWindows CVI开发入门和进阶》一书第3章中的例题源码

#include <analysis.h>
#include <ansi_c.h>
#include <cvirte.h>		
/* Needed if linking in external compiler; harmless otherwise */
#include <userint.h>
#include "sample3_1.h"

static int panelHandle;


int main (int argc, char *argv[])
{
	if (InitCVIRTE (0, argv, 0) == 0)	
	/* Needed if linking in external compiler; harmless otherwise */
		return -1;	/* out of memory */
	if ((panelHandle = LoadPanel (0, "sample3_1.uir", PANEL)) < 0)
		return -1;
	DisplayPanel (panelHandle);
	RunUserInterface ();
	return 0;
}

int CVICALLBACK Display (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	int noise_type ,i,j;
	/*0 rand noise;1 white noise;2 gause noise*/
	double mean,stdev,max,min;
	double data_noise[100];
	char buf[20]  ;
	switch (event)
		{
		case EVENT_COMMIT:
			GetCtrlVal (panelHandle,PANEL_RINGSLIDE, &noise_type);
			switch(noise_type)
			{
				case 0:
				/* Random  noise data */
	          	for (i=0;i<100;i++)
	               	data_noise[i] = rand()/32767.0 ;
				break;
				case 1:
				/* white niose data*/
				WhiteNoise (100, 1.0, 5, data_noise);
				break;
				case 2:
				/*gause noise data*/
				GaussNoise (100, 1.0, 5, data_noise);
			
				break;
			}
			PlotY (panelHandle, PANEL_GRAPH, data_noise, 100, VAL_DOUBLE, VAL_THIN_LINE,
				   VAL_SOLID_SQUARE, VAL_SOLID, 1, VAL_RED);
			//calculate mean &stdev	 
			StdDev (data_noise, 100, &mean, &stdev);  
			//calculate min &max
			MaxMin1D (data_noise, 100, &max, &i, &min, &j);       
			//format string to display
			sprintf(buf,"%6.2f",mean);
			//display
			SetCtrlVal (panelHandle, PANEL_MEAN, buf);
			sprintf(buf,"%6.2f",stdev); 
			SetCtrlVal (panelHandle, PANEL_STDEV, buf);
			sprintf(buf,"%6.2f",min); 
			SetCtrlVal (panelHandle, PANEL_MIN, buf);
			sprintf(buf,"%6.2f",max); 
			SetCtrlVal (panelHandle, PANEL_MAX,buf );  
			break;
		case EVENT_RIGHT_CLICK:
			MessagePopup("help","press this button to display chart"); 
			break;
		}
	return 0;
}

int CVICALLBACK ring (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	switch (event)
		{
		case EVENT_COMMIT:
			break;
		case EVENT_RIGHT_CLICK:
			MessagePopup("help","press this button to select noise type");
			break;
		}
	return 0;
}

int CVICALLBACK Clear (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	switch (event)
		{
		case EVENT_COMMIT: 
			DeleteGraphPlot (panelHandle, PANEL_GRAPH, -1, VAL_IMMEDIATE_DRAW);   
			SetCtrlVal (panelHandle, PANEL_MEAN, "");
			SetCtrlVal (panelHandle, PANEL_STDEV, "");
			SetCtrlVal (panelHandle, PANEL_MIN, "");
			SetCtrlVal (panelHandle, PANEL_MAX,"" );  
			break;
		case EVENT_RIGHT_CLICK:
			MessagePopup("help","press this button to clear chart");
			break;
		}
	return 0;
}

int CVICALLBACK Quit (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	switch (event)
		{
		case EVENT_COMMIT:
			QuitUserInterface (0);
			break;
		case EVENT_RIGHT_CLICK:
			MessagePopup("help","press this button to quit");
			break;
		}
	return 0;
}

int CVICALLBACK panel (int panel, int event, void *callbackData,
		int eventData1, int eventData2)
{
	switch (event)
		{
		case EVENT_LEFT_CLICK:
			break;
		case EVENT_LEFT_DOUBLE_CLICK:
			MessagePopup("help","This is sample3_1 main Windows");   
			break;
		case EVENT_RIGHT_CLICK:
			break;
		case EVENT_GOT_FOCUS:
			break;
		case EVENT_LOST_FOCUS: 
			break;
		case EVENT_CLOSE: 
			break;
		}
	return 0;
}