由进程名获得进程句柄可以用GetModuleHandle();
-
或者
用Process32First,Process32Next这两个函数遍历进程列表，找到匹配的进程,再用OpenProcess()取得进程句柄！

参考
http://www.vckbase.com/document/viewdoc/?id=415

谢谢楼上的 laiyiling(陌生人 专注MS技术) ， 我现在在试...

HANDLE hSnapshot=CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,0);
PROCESSENTRY32 *pProcInfo=new PROCESSENTRY32;
pProcInfo->dwSize=sizeof(PROCESSENTRY32);
Process32First(hSnapshot,pProcInfo);
do 
{
if(strcmp("QQ.exe",pProcInfo->szExeFile)==0)
{
CString asd;
h_QQMain=(HWND)OpenProcess(PROCESS_ALL_ACCESS,0,pProcInfo->th32ProcessID);
asd.Format("PID %d HWND=%x",pProcInfo->th32ProcessID,h_QQMain);
MessageBox(asd);
}
} while(Process32Next(hSnapshot,pProcInfo));