VC由进程ID获取窗口句柄的各种方

//通过进程ID获取进程句柄 

HANDLE GetProcessHandleByPid(DWORD dwPid)

{  

return OpenProcess(PROCESS_ALL_ACCESS, FALSE, dwPid);

//通过进程名获取进程句柄

#include <tlhelp32.h>

HANDLE GetProcessHandleByName(LPCTSTR pName)

{

HANDLE hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);

if (INVALID_HANDLE_VALUE == hSnapshot)

{

return NULL;

}

PROCESSENTRY32 pe = { sizeof(pe) };

BOOL fOk = Process32First(hSnapshot, &pe);

for (; fOk; fOk = Process32Next(hSnapshot, &pe))

{

if (!_tcsicmp(pe.szExeFile, pName))

{

CloseHandle(hSnapshot);

return OpenProcess(PROCESS_ALL_ACCESS, FALSE, pe.th32ProcessID);

}

}

CloseHandle(hSnapshot);

return NULL;

}

//通过进程名获取进程ID

BOOL GetPidByFileName(CString sName, DWORD &dwPid)

{

//创建进程快照 

HANDLE hSnapshot = ::CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0); //0: 指本进程

if (INVALID_HANDLE_VALUE == hSnapshot)

{

return FALSE;

}

//遍历进程快照

PROCESSENTRY32 pe32;

pe32.dwSize = sizeof(pe32);

BOOL bMore = ::Process32First(hSnapshot, &pe32);

while (bMore)

{

if (!_strcmpi(pe32.szExeFile, sName))

{

dwPid = pe32.th32ProcessID;

::CloseHandle(hSnapshot);

return TRUE;

}

bMore = ::Process32Next(hSnapshot, &pe32);

}

//清除快照对象 

::CloseHandle(hSnapshot);

return FALSE;

}

//通过进程ID获取窗口句柄

HWND GetWindowHandleByPID(DWORD dwProcessID)

{

HWND hWnd = GetTopWindow(0);

while (hWnd)

{

DWORD dwPid = 0;

DWORD dwTid = GetWindowThreadProcessId(hWnd, &dwPid);

if (0 != dwTid)

{

if (dwProcessID == dwPid)

{

return hWnd;

}

}

hWnd = GetNextWindow(hWnd, GWL_HWNDPARENT);

}

return NULL;

}

//===============枚举窗体===============
//通过进程ID获取窗口句柄(使用枚举窗体方法)
typedef struct tagWNDINFO
{
DWORD dwProcessId;
HWND hWnd;

}WNDINFO, *LPWNDINFO;

BOOL CALLBACK EnumWindowsProc(HWND hWnd, LPARAM lParam)
{
DWORD dwProcessId;
GetWindowThreadProcessId(hWnd, &dwProcessId);
LPWNDINFO pInfo = (LPWNDINFO)lParam;

if (dwProcessId == pInfo->dwProcessId)
{
pInfo->hWnd = hWnd;
return FALSE; //退出枚举
}
return TRUE; //继续枚举
}

HWND GetProcessMainWnd(DWORD dwProcessId)
{
WNDINFO wi;
wi.dwProcessId = dwProcessId;
wi.hWnd = NULL;
EnumWindows(EnumWindowsProc, (LPARAM)&wi);
return wi.hWnd;
}
//===============枚举窗体===============

//ID–HANDLE–HWND三者之间的互相转换
//id->句柄     hWnd = ::GetDlgItem(hParentWnd, id);
//id->指针     CWnd::GetDlgItem();
//句柄->id     id = GetWindowLong(hWnd, GWL_ID);
//句柄->指针    CWnd *pWnd = CWnd::FromHandle(hWnd);
//指针->ID     id = GetWindowLong(pWnd->GetSafeHwnd, GWL_ID);
//GetDlgCtrlID();
//指针->句柄    hWnd = cWnd.GetSafeHandle() or mywnd->m_hWnd;

//句柄->指针
CWnd* GetCwndByHwnd(HWND hWnd)
{
CWnd *pWnd = CWnd::FromHandle(hWnd);
return pWnd;
}

//指针->句柄
HWND GetCwndByHwnd(CWnd cWnd)
{
HWND hWnd = cWnd.GetSafeHwnd();  // mywnd->m_hWnd
return hWnd;
}

//=====================================================================================================

//通过窗口标题名杀进程
BOOL FindProcessHandleAndKill(const CString &sWndName)
{
HWND   hWnd;
DWORD   ProcessID;
HANDLE   hProcess;

hWnd = ::FindWindow(NULL, sWndName);

if (hWnd == NULL)
{
return   FALSE;
}
else
{
if (GetWindowThreadProcessId(hWnd, &ProcessID) == 0)
{
return   FALSE;
}
else
{
hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, ProcessID);
if (hProcess == NULL)
{
return   FALSE;
}
else
{
if (TerminateProcess(hProcess, 0))
{
return   TRUE;
}
else
{
return   FALSE;
}
}
}
}
}

    原文作者:jiangqin115
    原文地址: https://blog.csdn.net/jiangqin115/article/details/38870907
    本文转自网络文章,转载此文章仅为分享知识,如有侵权,请联系博主进行删除。
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