sample4_7.c

CVI教程,用于信号采集系统的多任务开发软件.学习简单,功能实用.

#include <ansi_c.h>
#include <cvirte.h>		/* Needed if linking in external compiler; harmless otherwise */
#include <userint.h>
#include "sample4_7.h"

static int panelHandle;
double datapoints[100];  
int line_color=0x33FF99, line_style=0;
int shape_color=0x0,shape_style=0,shapefill_mode=0;
int cursor_number=1;
int main (int argc, char *argv[])
{
	int i;
	if (InitCVIRTE (0, argv, 0) == 0)	
		return -1;	/* out of memory */
    for (i=0; i<100; i++)
        datapoints[i] = 100.0 * rand() / RAND_MAX;
	
	if ((panelHandle = LoadPanel (0, "sample4_7.uir", PANEL)) < 0)
		return -1;
	DisplayPanel (panelHandle);
	RunUserInterface ();
	return 0;
}

int CVICALLBACK Shutdown (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	switch (event)
	{
		case EVENT_COMMIT:
			QuitUserInterface (0);
			break;
	}
	return 0;
}

int CVICALLBACK Graph (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
    double x,y;
    int plothandle, index;

    if (event == EVENT_COMMIT) {
        GetGraphCursor (panelHandle, PANEL_GRAPH, cursor_number, &x, &y);
        GetGraphCursorIndex (panelHandle, PANEL_GRAPH, cursor_number, &plothandle, &index);
        SetCtrlVal (panelHandle, PANEL_XREADOUT, x);
        SetCtrlVal (panelHandle, PANEL_YREADOUT, y);
        SetCtrlVal (panelHandle, PANEL_INDEX, index);
        }
	return 0;
}

int CVICALLBACK PlotCurve (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	switch (event)
	{
		case EVENT_COMMIT:
       		 DeleteGraphPlot (panelHandle, PANEL_GRAPH, -1, 1);
        	 PlotY (panelHandle, PANEL_GRAPH, datapoints, 100, VAL_DOUBLE, line_style,
               VAL_EMPTY_SQUARE, VAL_SOLID, 1, line_color);  
			break;
	}
	return 0;
}

int CVICALLBACK LineColor (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	switch (event)
	{
		case EVENT_COMMIT:
			GetCtrlVal (panelHandle, PANEL_LINECOLOR, &line_color); 
			PlotCurve (0,0,EVENT_COMMIT,0,0,0);
			SetActiveCtrl( panel, control);
			break;
	}
	return 0;
}

int CVICALLBACK LineStyle (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	switch (event)
	{
		case EVENT_COMMIT:
			GetCtrlVal (panelHandle, PANEL_LINESTYLE, &line_style);
			PlotCurve (0,0,EVENT_COMMIT,0,0,0);   
			SetActiveCtrl( panel, control); 
			break;
	}
	return 0;
}

int CVICALLBACK PlotShape (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	int color_fill;
	switch (event)
	{
		case EVENT_COMMIT:
	        if (shapefill_mode)
	            color_fill = VAL_TRANSPARENT;
	        else
	            color_fill = shape_color;
	        DeleteGraphPlot (panelHandle, PANEL_GRAPH, -1, 1);
	        switch (shape_style) {
	            case 0 :
	                PlotRectangle (panelHandle, PANEL_GRAPH, 20, 20, 50, 50, shape_color, color_fill);
	                break;
	            case 1 :
	                PlotOval (panelHandle, PANEL_GRAPH, 20, 40, 50, 50, shape_color, color_fill);
	                break;
	            case 2 :
	                PlotArc (panelHandle, PANEL_GRAPH, 20, 20, 50, 50, 1500, 900, shape_color, color_fill);
	                break;
	            case 3 :
	                PlotPoint (panelHandle, PANEL_GRAPH, 44, 66, VAL_EMPTY_SQUARE, shape_color);
	                break;
	            case 4 :
	                PlotText (panelHandle, PANEL_GRAPH, 30, 60, "TEXT", VAL_MENU_META_FONT,
	                      shape_color, VAL_TRANSPARENT);
	                break;
	            } 
			break;
	}
	return 0;
}

int CVICALLBACK FillColor (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	switch (event)
	{
		case EVENT_COMMIT:
			 GetCtrlVal (panelHandle, PANEL_FILLCOLOR, &shape_color);  
			 PlotShape (0,0,EVENT_COMMIT,0,0,0); 
			 SetActiveCtrl( panel, control); 
			break;
	}
	return 0;
}

int CVICALLBACK FillMode (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	switch (event)
	{
		case EVENT_COMMIT:
			GetCtrlVal (panelHandle, PANEL_FILLMODE, &shapefill_mode); 
			PlotShape (0,0,EVENT_COMMIT,0,0,0); 
			SetActiveCtrl( panel, control); 
			break;
	}
	return 0;
}

int CVICALLBACK ShapeStyle (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	switch (event)
	{
		case EVENT_COMMIT:
			GetCtrlVal (panelHandle, PANEL_SHAPESTYLE, &shape_style); 
			PlotShape (0,0,EVENT_COMMIT,0,0,0); 
			SetActiveCtrl( panel, control); 
			break;
	}
	return 0;
}

int CVICALLBACK SelectCursor (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	switch (event)
	{
		case EVENT_COMMIT:
			GetCtrlVal (panelHandle, PANEL_SELECTCURSOR, &cursor_number);
			Graph(0,0,EVENT_COMMIT,0,0,0); 
			SetActiveCtrl( panel, control); 
			break;
	}
	return 0;
}