这个办法也行。去baidu搜一个 tskill 命令下载。

rloa=true关计算器，rloa=false开计算器

if (GetTagBit("rloa")==0)
{
ProgramExecute("calc.exe"); //Return-Type: unsigned long int
SetTagBit("rloa",1); //Return-Type: BOOL
}
else
{
ProgramExecute("C:\\Program Files\\Siemens\\WinCC\\tskill calc"); //Return-Type: unsigned long int
SetTagBit("rloa",0); //Return-Type: BOOL
}