sample10_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.

#include <ansi_c.h>
#include <tcpsupp.h>
#include <cvirte.h>		/* Needed if linking in external compiler; harmless otherwise */
#include <userint.h>
#include "sample10_1.h"

static int panel;
int Type=1,ConnectedHandle;
char Machine[100]={""};
int CVICALLBACK ClientCallback(unsigned handle, int event, 
		int error, void *callbackData);   
int CVICALLBACK ServerCallback(unsigned handle, int event, 
		int error, void *callbackData);  
void Start(void);
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 ((panel = LoadPanel (0, "sample10_1.uir", PANEL_2)) < 0)
		return -1;
	DisplayPanel (panel);
	RunUserInterface ();
	return 0;
}

int CVICALLBACK Send (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	char buf[100][101];
	int num,i;
	if(event==EVENT_COMMIT){
		GetNumTextBoxLines (panel, PANEL_SENDDATA, &num);
		for(i=0;i<num;i++)
			GetTextBoxLine (panel, PANEL_SENDDATA, i, buf[i]);
		for(i=0;i<num;i++)
			if(Type)  //server
				ServerTCPWrite (ConnectedHandle, buf[i], 100, 0);
			else	  //client
				ClientTCPWrite (ConnectedHandle, buf[i], 100, 0);  
	}
	return 0;
}  

int  CVICALLBACK Clear(int panel, int control, int event, 
		void *callbackData, int eventData1, int eventData2)         
{
	if(event==EVENT_COMMIT)    
		ResetTextBox (panel, PANEL_RECEIVEDATA, "");
	return 0;
}  
int CVICALLBACK quit (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	if(event==EVENT_COMMIT)
	{
		QuitUserInterface (0);
		if(Type)//server
			UnregisterTCPServer (2001);
		else 
			if(ConnectedHandle)
				DisconnectFromTCPServer (ConnectedHandle); 
	}
	return 0;   
}

int CVICALLBACK ok (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	if(event==EVENT_COMMIT) {
		if(Type==0)  //client
			GetCtrlVal (panel, PANEL_2_STRING, Machine);
		DiscardPanel( panel);
		panel = LoadPanel (0, "sample10_1.uir", PANEL);
		Start();
		if(Type) //server
			SetCtrlVal (panel, PANEL_TEXTMSG, "Run in Server Mode");
		else 
			SetCtrlVal (panel, PANEL_TEXTMSG, "Run in Client Mode"); 
		DisplayPanel (panel); 
	}
	return 0;
}
int CVICALLBACK SelectType (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	if(event==EVENT_COMMIT) {
		 GetCtrlVal (panel, PANEL_2_BINARYSWITCH, &Type);   
		if(Type==0) //client
			SetCtrlAttribute (panel, PANEL_2_STRING, ATTR_DIMMED, 0);
		else 		//server
			SetCtrlAttribute (panel, PANEL_2_STRING, ATTR_DIMMED, 1); 
	}
	return 0;
}
int CVICALLBACK Timer (int panel, int control, int event,
		void *callbackData, int eventData1, int eventData2)
{
	char buf[100];
	if(event==EVENT_TIMER_TICK)   //client
		 if(!ConnectToTCPServer (&ConnectedHandle, 2001, Machine, ClientCallback, 0, 0))
		 {  //no error
			GetTCPPeerAddr (ConnectedHandle,buf, 50);
			SetCtrlVal (panel, PANEL_CONNECTEDIP, buf);
			GetTCPPeerName (ConnectedHandle,buf, 50);
			SetCtrlVal (panel, PANEL_CONNECTEDNAME, buf); 
		 	SetCtrlAttribute (panel, PANEL_TIMER, ATTR_ENABLED, 0); 
			SetCtrlAttribute (panel, PANEL_SEND, ATTR_DIMMED, 0);
			SetCtrlVal (panel, PANEL_CONNECTED, 1); 
		 }
	return 0;
}
int CVICALLBACK ClientCallback(unsigned handle, int event, 
		int error, void *callbackData)
{
 	char buf[1000];     
 	switch(event){
 	case TCP_DISCONNECT:
 		ConnectedHandle=0;  
 		SetCtrlVal (panel, PANEL_CONNECTEDIP, ""); 
 		SetCtrlVal (panel, PANEL_CONNECTEDNAME, "");      
		SetCtrlAttribute (panel, PANEL_SEND, ATTR_DIMMED, 1);
		SetCtrlVal (panel, PANEL_CONNECTED, 0);
		//if disconnected,then try
		SetCtrlAttribute (panel, PANEL_TIMER, ATTR_ENABLED, 1);     
		//if(error)  return 0;
 		break;
 	case TCP_DATAREADY:
		if(ClientTCPRead (handle, buf, 900, 500)) ;
		//	return 0;
		InsertTextBoxLine (panel, PANEL_RECEIVEDATA, -1, buf);
 		break;
 	}
 	return 0;
}
int CVICALLBACK ServerCallback(unsigned handle, int event, 
		int error, void *callbackData)
{
	char buf[1000];
 	switch(event){
 	case TCP_CONNECT:
		GetTCPPeerAddr (handle,buf, 50);
		SetCtrlVal (panel, PANEL_CONNECTEDIP, buf);
		GetTCPPeerName (handle,buf, 50);
		SetCtrlVal (panel, PANEL_CONNECTEDNAME, buf); 
		
 		ConnectedHandle=handle;
		SetCtrlAttribute (panel, PANEL_SEND, ATTR_DIMMED, 0);
		SetCtrlVal (panel, PANEL_CONNECTED, 1); 
 		break;
 	case TCP_DISCONNECT:
 		ConnectedHandle=0;
 		SetCtrlVal (panel, PANEL_CONNECTEDIP, ""); 
 		SetCtrlVal (panel, PANEL_CONNECTEDNAME, "");      
		SetCtrlAttribute (panel, PANEL_SEND, ATTR_DIMMED, 1);
		SetCtrlVal (panel, PANEL_CONNECTED, 0); 
		//if(error)  return 0;     
 		break;
 	case TCP_DATAREADY:
		if(ServerTCPRead (handle, buf, 999, 500));
		//	return 0;
		InsertTextBoxLine (panel, PANEL_RECEIVEDATA, -1, buf); 
 		break;
 	}
 	return 0;
}
void Start()
{
	char buf[100];
 	if(Type)//Server
		RegisterTCPServer (2001, ServerCallback, 0);
 	else//client
		 if(!ConnectToTCPServer (&ConnectedHandle, 2001, Machine, ClientCallback, 0, 0))
		 {  //no error
			GetTCPPeerAddr (ConnectedHandle,buf, 50);
			SetCtrlVal (panel, PANEL_CONNECTEDIP, buf);
			GetTCPPeerName (ConnectedHandle,buf, 50);
			SetCtrlVal (panel, PANEL_CONNECTEDNAME, buf);
		 	SetCtrlAttribute (panel, PANEL_TIMER, ATTR_ENABLED, 0); 
			SetCtrlAttribute (panel, PANEL_SEND, ATTR_DIMMED, 0);
			SetCtrlVal (panel, PANEL_CONNECTED, 1); 
		 }
		 else
			SetCtrlAttribute (panel, PANEL_TIMER, ATTR_ENABLED, 1);
}