“tlhelp32.h”的编译错误在MinGW g ++编译器中 [英] Getting compilation error for "tlhelp32.h" in MinGW g++ compiler

问题描述

我正在创建一个简单的C ++应用程序，检查给定的exe文件示例：'a.exe'是否正在Windows操作系统上运行，我已经google了，并在下面的链接中找到一些代码。 p>

http://stackoverflow.com/questions/3355379/how-do-i-find-out-if-a-exe-is-running-in-c

上述代码使用头文件tlhelp32.h。我刚刚复制的代码做了一些必要的更改，并在MinGW中完成，出现的问题所有的数据类型提到的头文件中错误ex：'DWORD'不命名一个类型，'LONG'不命名类型，'WCHAR'没有命名一个类型，'CHAR'不命名一个类型，

我从来没有面对这种问题，其中存在的头文件失败complie（是的，我检查了它）。

有人可以帮我这个。

代码如下：

  #include< tlhelp32.h& 
 
 
 int main（）
 {
 PROCESSENTRY32 pe32 = {0}; 
 HANDLE hSnap; 
 int iDone; 
 int iTime = 60; 
 bool bProcessFound; 
 
 while（true）// go forever 
 {
 hSnap = CreateToolhelp32Snapshot（TH32CS_SNAPPROCESS，0）; 
 pe32.dwSize = sizeof（PROCESSENTRY32）; 
 Process32First（hSnap，& pe32）; //可以抛弃，从不是一个实际的应用程序
 
 bProcessFound = false; //初始值
 iDone = 1; 
 
 while（iDone）//直到退出进程
 {
 iDone = Process32Next（hSnap，& pe32）; 
 if（strcmp（pe32.szExeFile，a.exe）== 0）//我们找到我们的过程吗？ 
 {
 bProcessFound = true; 
 iDone = 0; 
} 
} 
 
 if（！bProcessFound）//如果我们没有找到它运行... 
 {
 startProcess（C： \\MinGW\\+a.exe，）; // start it 
} 
 Sleep（iTime * 10）; // delay x amount of seconds。 
} 
 return 0; 
 
} 
  

解决方案

Critten说在tlhelp32之前添加Windows.h解决了问题，并且更多的上述代码中的startprocess（）从来不存在，所以使用shellexecute（）使它工作

ex：ShellExecute（NULL，open，c：\MinGW\a.exe，NULL，NULL，SW_SHOWDEFAULT）;

I am in the process of creating a simple C++ app that checks whether the given exe file example:'a.exe' is running or not on windows OS, i have googled and found some code in the below link.

http://stackoverflow.com/questions/3355379/how-do-i-find-out-if-a-exe-is-running-in-c

The code mentioned above uses a header file "tlhelp32.h". I just copied the code did some necessary changes and complied it in MinGW , there comes the problem all of the datatypes mentioned in that header files are errored out ex: 'DWORD' does not name a type, 'LONG' does not name a type, 'WCHAR' does not name a type,'CHAR' does not name a type,

I never before faced this kind of issues where a existed header file has failed to complie (yes it exist i checked it).

can somebody help me with this.

code below:

#include <tlhelp32.h>


int main()
{
    PROCESSENTRY32 pe32 = {0};
HANDLE    hSnap;
int       iDone;
int       iTime = 60;
bool      bProcessFound;

while(true)    // go forever
{
    hSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,0);
    pe32.dwSize = sizeof(PROCESSENTRY32);
    Process32First(hSnap,&pe32);     // Can throw away, never an actual app

    bProcessFound = false;   //init values
    iDone = 1;

    while(iDone)    // go until out of Processes
    {
        iDone = Process32Next(hSnap,&pe32);
        if (strcmp(pe32.szExeFile,"a.exe") == 0)    // Did we find our process?
        {
            bProcessFound = true;
            iDone = 0;
        }
    }

    if(!bProcessFound)    // if we didn't find it running...
    {
        startProcess("C:\\MinGW\\"+"a.exe","");             // start it
    }
    Sleep(iTime*10);    // delay x amount of seconds.
}
return 0;

}

解决方案

As Richard Critten said adding "Windows.h" before "tlhelp32" resolves the issue and more over a function startprocess() in the above code has never exist so use shellexecute() to make it to work

ex: ShellExecute(NULL, "open", "c:\MinGW\a.exe", NULL, NULL, SW_SHOWDEFAULT);

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