原创 Labwindows/cvi8.5学习日志(55)----数据格式化

 switch (event)
 {
  case EVENT_COMMIT:
  {
   GetCtrlVal(panel,control,&temp);
 
  /*
   [e2], 规定数据以科学计数法来表示，n可选，规定指数的数据个数
   [p3], 规定数据的精度，如果省了修饰符pn，默认为p6
   例如输入122.34，显示为  1.223e+02
  */
   //Fmt(String,"%f[e2p3]",temp);
   
  /*
   [wn], 规定字符串的精确字节数
   [r], 数据四舍五入，默认为截尾
  */
   //Fmt(String,"字符串为%f[w6r]",temp);
 
  /*
   [r], 数据四舍五入，默认为截尾
   例如输入122.374，显示为 122.374，默认小数点右边的数据个数为6位
  */
   Fmt(String,"字符串为%f[r]",temp);
             
   SetCtrlVal(panel,PANEL_STRING_3,String);
   break;
  }
 }
 return 0;
}
//*****************************************************************************
int CVICALLBACK cb_2int (int panel, int control, int event,
  void *callbackData, int eventData1, int eventData2)
{
 int temp;
 
 switch (event)
 {
  case EVENT_COMMIT:
  {
   GetCtrlVal(panel,control,String);
   Fmt(&temp,"%i<%s",String);
   SetCtrlVal(panel,PANEL_NUMERIC_2,temp);
   break;
  }
 }
 return 0;
}
//*****************************************************************************
int CVICALLBACK cb_2double (int panel, int control, int event,
  void *callbackData, int eventData1, int eventData2)
{
 double temp;
 
 switch (event)
 {
  case EVENT_COMMIT:
  {
   GetCtrlVal(panel,control,String);
   Fmt(&temp,"%f<%s",String);
   SetCtrlVal(panel,PANEL_NUMERIC_4,temp);
   break;
  }
 }
 return 0;
}
//*****************************************************************************
void init(void)
{
 char *ptr;
 int Hours, Minutes, Seconds;
 int Month, Day, Year;
 
 GetDir(Current_Directory); // Gets the current working directory on the default drive.
 SetCtrlVal(panelHandle,PANEL_STRING_GETDIR,Current_Directory); // 在默认驱动器上活动当前的工作目录
 
 cb_2string (panelHandle, PANEL_NUMERIC, EVENT_COMMIT,0, 0, 0);
 cb_2string3 (panelHandle, PANEL_NUMERIC_3, EVENT_COMMIT,0, 0, 0);
 cb_2int (panelHandle, PANEL_STRING_2, EVENT_COMMIT,0, 0, 0);
 cb_2double (panelHandle, PANEL_STRING_4, EVENT_COMMIT,0, 0, 0);
 
#if 0 
  ptr=DateStr();
 SetCtrlVal(panelHandle,PANEL_STRING_DATE,ptr);
 
  ptr=TimeStr();
 SetCtrlVal(panelHandle,PANEL_STRING_TIME,ptr);
#else     
 GetSystemDate (&Month, &Day, &Year);
 Fmt(String,"%i[w4p0]年%i[w2p0]月%i[w2p0]日",Year,Month,Day);
 
 SetCtrlVal(panelHandle,PANEL_STRING_DATE,String);
            
 GetSystemTime (&Hours, &Minutes, &Seconds);   
 Fmt(String,"%i[w2p0]:%i[w2p0]:%i[w2p0]",Hours,Minutes,Seconds);
 
 SetCtrlVal(panelHandle,PANEL_STRING_TIME,String);
#endif
}               
//*****************************************************************************
int main (int argc, char *argv[])
{
 if (InitCVIRTE (0, argv, 0) == 0)
  return -1; /* out of memory */
 if ((panelHandle = LoadPanel (0, "fmt.uir", PANEL)) < 0)
  return -1;
 init();
 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;
 }
 return 0;
}
//*****************************************************************************
//*****************************************************************************
//*****************************************************************************