按照教程增加后，编译无报错，但消息“11”一直显示，感觉不太正常，各位麻烦看看。

#include "apdefap.h"

void OnClick(char* lpszPictureName, char* lpszObjectName, char* lpszPropertyName)

{

BOOL a;

BOOL c;

a=GetTagBit("1900_discharge_out"); 

if (a==0)  

{

  if (MessageBox(NULL,"真的要启动出料吗？","操作提示",MB_YESNO|MB_ICONQUESTION|MB_SETFOREGROUND|MB_SYSTEMMODAL) == 6)

    {SetTagBit("1900_discharge_out",1);}

}

else

{

  if (MessageBox(NULL,"真的要停止出料吗？","操作提示",MB_YESNO|MB_ICONQUESTION|MB_SETFOREGROUND|MB_SYSTEMMODAL) == 6)

    { SetTagBit("1900_discharge_out",0);}

}

c=GetTagBit("1900_discharge_out"); 

GCreateMyOperationMsg(0x00000001,11,"N_TO_JY_CANSHU","1900_discharge_out",76,a,c,"changed");

}