关于获取日期时间字符串控件的问题
我用获取时间日期字符串来获取当前的时间,由于要进行时间的比较,但是如果是2008-9-9的话.按照字符串比较原则它应该大于2008-9-10,但是我要用比较值来查询数据库.请问如何使这个控件输出的时间格式是2008-9-09. 闲话少说，请看附件！ 请问版主 这个附件怎么用?那个exe文件是做什么的 我晕！解压后用LabWindows/CVI打开demo.cws工作空间就可以看到具体怎么实现了。那个exe文件是可执行文件，单击OK按钮，可以显示当前的格式化时间字符串。再贴一下源代码：
#include <ansi_c.h>
#include <cvirte.h>
#include <userint.h>
#include "demo.h"
#define DATETIME_FORMATSTRING "%Y-%m-%d"
static int panelHandle;
int __stdcall WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPSTR lpszCmdLine, int nCmdShow)
{
if (InitCVIRTE (hInstance, 0, 0) == 0)
return -1; /* out of memory */
if ((panelHandle = LoadPanel (0, "demo.uir", PANEL)) < 0)
return -1;
DisplayPanel (panelHandle);
RunUserInterface ();
DiscardPanel (panelHandle);
return 0;
}
int CVICALLBACK OkCallback (int panel, int control, int event,
void *callbackData, int eventData1, int eventData2)
{
double currDateTime;
int bufferLen;
char *dateTimeBuffer = NULL;
switch (event)
{
case EVENT_COMMIT:
GetCurrentDateTime (&currDateTime);
bufferLen = FormatDateTimeString (currDateTime, DATETIME_FORMATSTRING, NULL, 0);
dateTimeBuffer = malloc (bufferLen + 1);
FormatDateTimeString (currDateTime, DATETIME_FORMATSTRING, dateTimeBuffer, bufferLen + 1 );
SetCtrlVal(panelHandle,PANEL_STRING,dateTimeBuffer);
break;
case EVENT_GOT_FOCUS:
break;
}
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_GOT_FOCUS:
break;
}
return 0;
}
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