scrollbar.c

labview程序编程技巧演示

#include "utility.h"
#include "scroll.h"
#include <cvirte.h>		
#include <userint.h>
#include "scrollbar.h"

static int panelHandle;

//声明自定义函数。
void getvalue (void);

int main (int argc, char *argv[])
{
	if (InitCVIRTE (0, argv, 0) == 0)
		return -1;	/* out of memory */
	if ((panelHandle = LoadPanel (0, "scrollbar.uir", PANEL)) < 0)
		return -1;
	
	ScrollBar_ConvertFromGraph (panelHandle, PANEL_GRAPH_VERTICAL, scrollbarCB, NULL);

	DisplayPanel (panelHandle);
	RunUserInterface ();
	DiscardPanel (panelHandle);
	return 0;
}

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

			break;
	}
	return 0;
}

int CVICALLBACK scrollbarCB (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	switch (event)
	{
		case EVENT_SB_UP_BUTTON:
			getvalue ();
			break;
		case EVENT_SB_DOWN_BUTTON:
			getvalue ();
			break;
		case EVENT_SB_PAGE_UP:
			getvalue ();
			break;
		case EVENT_SB_PAGE_DOWN:
			getvalue ();
			break;
		case EVENT_SB_THUMB_CHANGE:
			getvalue ();
			break;
		case EVENT_SB_COMMIT:
			getvalue ();
			break;			
	}
	return 0;
}

int CVICALLBACK adjustvalue (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	int value;
	switch (event)
	{
		case EVENT_COMMIT:
			GetCtrlVal (panelHandle, control, &value);
			switch (control)
			{
				case PANEL_NUMERIC_VERTICAL_MIN:
					ScrollBar_SetAttribute (panelHandle, PANEL_GRAPH_VERTICAL, ATTR_SB_DOC_MIN, value);
					break;
				case PANEL_NUMERIC_VERTICAL_VAL:
					ScrollBar_SetAttribute (panelHandle, PANEL_GRAPH_VERTICAL, ATTR_SB_VALUE, value);
					break;
				case PANEL_NUMERIC_VERTICAL_MAX:
					ScrollBar_SetAttribute (panelHandle, PANEL_GRAPH_VERTICAL, ATTR_SB_DOC_MAX, value);
					break;
				case PANEL_NUMERIC_VERTICAL_HEI:
					ScrollBar_SetAttribute (panelHandle, PANEL_GRAPH_VERTICAL, ATTR_SB_HEIGHT, value);
					break;
				case PANEL_NUMERIC_VERTICAL_WID:
					ScrollBar_SetAttribute (panelHandle, PANEL_GRAPH_VERTICAL, ATTR_SB_WIDTH, value);
					break;
				case PANEL_COLORNUM_COLOR:
					ScrollBar_SetAttribute (panelHandle, PANEL_GRAPH_VERTICAL, ATTR_SB_COLOR, value);
					break;
				case PANEL_TOGGLEBUTTON_MODE:
					ScrollBar_SetAttribute (panelHandle, PANEL_GRAPH_VERTICAL, ATTR_SB_VERTICAL, value);
					break;
				case PANEL_NUMERIC_VERTICAL_VIEW:
					ScrollBar_SetAttribute (panelHandle, PANEL_GRAPH_VERTICAL, ATTR_SB_VIEW_SIZE, value);
					break;
			}

			break;
	}
	return 0;
}

void getvalue (void)
{
    int value;
	ScrollBar_GetAttribute (panelHandle, PANEL_GRAPH_VERTICAL, ATTR_SB_VALUE, &value);
	SetCtrlVal (panelHandle, PANEL_NUMERIC_VERTICAL_VAL, value);
}