sample7_1.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.

///windows include file////
#include <windows.h> 
#include <winreg.h>
///cvi include file////
#include <ansi_c.h>    
#include <cvirte.h>		/* Needed if linking in external compiler; harmless otherwise */
#include <userint.h>
#include "sample7_1.h"

static int panelHandle;
char FPfilename[100][260],ver[5]={"5.0"},subkey[250];
int fileNum,changed=0;

int ReadLibrary(void) ;
void InitList(int num) ;
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, "sample7_1.uir", PANEL2)) < 0)
		return -1;
	
	DisplayPanel (panelHandle);
	RunUserInterface ();
	return 0;
}

int CVICALLBACK Select (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	int ret;
	char pathName[260];
	switch (event)
	{
		case EVENT_COMMIT:
		ret=FileSelectPopup ("c:\\", "*.fp", "*.fp,*.lfp", "选择驱动器文件",
						 VAL_LOAD_BUTTON, 0, 1, 1, 0, pathName);
		if(ret!=VAL_EXISTING_FILE_SELECTED)
			   return 0;
		changed=1;
		strcpy( FPfilename[fileNum],pathName);
		InsertListItem (panelHandle, PANEL_LISTBOX, fileNum, pathName,pathName);
		fileNum++;
		SetCtrlAttribute (panelHandle, PANEL_DELETE, ATTR_DIMMED, 0);
		break;
	}
	return 0;
}

int CVICALLBACK Delete (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	int i,SelectIndex;
	switch (event)
	{
		case EVENT_COMMIT:
			changed=1;
			GetCtrlIndex (panelHandle, PANEL_LISTBOX, &SelectIndex);  
			DeleteListItem (panelHandle, PANEL_LISTBOX, SelectIndex, 1);
			fileNum--;
			if(fileNum==0)
				SetCtrlAttribute (panelHandle, PANEL_DELETE, ATTR_DIMMED, 1);
			for(i=SelectIndex;i<fileNum;i++)
				strcpy(FPfilename[i],FPfilename[i+1]);  
			break;
	}
	return 0;
}

int CVICALLBACK Apply (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	char temp[20];
 	int result,i,FileNameLen;
 	HKEY  key;    
	switch (event)
	{
		case EVENT_COMMIT:
 			RegOpenKeyEx(HKEY_CURRENT_USER,subkey,0,KEY_ALL_ACCESS,&key);  
			for(i=1;;i++)
    		{
    			sprintf(temp,"LibraryFPFile%d",i);
    			result=RegDeleteValue( key,temp); 
    			if(result!=ERROR_SUCCESS)
    				break;
    		}
    		for(i=1;i<fileNum+1;i++)
    		{
    			sprintf(temp,"LibraryFPFile%d",i);  
    			RegSetValueEx(key,temp,0,REG_SZ,FPfilename[i-1],strlen(FPfilename[i-1])+1);
    		}
    		RegCloseKey (key); 
			break;
	}
	return 0;
}

int CVICALLBACK Cancel (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	switch (event)
	{
		case EVENT_COMMIT:
			QuitUserInterface (0);
			break;
	}
	return 0;
}
int ReadLibrary(void)
{
	char temp[20];
 	int result,i,FileNameLen;
 	HKEY  key;
 	RegOpenKeyEx(HKEY_CURRENT_USER,subkey,0,KEY_ALL_ACCESS,&key);
    for(i=1;;i++)
    {
    	sprintf(temp,"libraryfpfile%d",i);
    	FileNameLen=260;
    	result=RegQueryValueEx(key,temp,NULL,NULL,FPfilename[i-1],&FileNameLen) ;
    	if(result!=ERROR_SUCCESS)
    	{
    		i--;	
    		break;
    	}  
    }
 	RegCloseKey (key);
 return i;
}
void InitList(int num)
{
    int i=0;
	DeleteListItem (panelHandle, PANEL_LISTBOX,0 ,-1 );  
    for(i=0;i<num;i++)
		InsertListItem (panelHandle, PANEL_LISTBOX, i, FPfilename[i],FPfilename[i] ); 
	SetActiveCtrl (panelHandle, PANEL_SELECT);
	
}

int CVICALLBACK OK (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	switch (event)
	{
		case EVENT_COMMIT:
			GetCtrlVal (panelHandle, PANEL2_RING, ver);
			sprintf(subkey,"Software\\National Instruments\\cvi\\%s\\libraries",ver);    
			DiscardPanel(panelHandle);
			panelHandle=LoadPanel (0, "sample7_1.uir", PANEL);
			DisplayPanel (panelHandle); 
			fileNum=ReadLibrary();
			if(fileNum>0)
				InitList(fileNum);
			else
				SetCtrlAttribute (panelHandle, PANEL_DELETE, ATTR_DIMMED, 1);
			break;
	}
	return 0;
}