windows判断窗口是否置顶、设置取消置顶、设置前景

来源：互联网发布：数据的重要性编辑：程序博客网时间：2024/05/02 02:49

判断窗口是否置顶

    bool isWndTopMost(HWND hwnd) {        return GetWindowLong(hwnd, GWL_EXSTYLE) & WS_EX_TOPMOST;    }

设置和取消置顶

    void showWndTopMost(HWND hwnd){        RECT rect;        GetWindowRect(hwnd, &rect);        SetWindowPos(hwnd, HWND_TOPMOST, rect.left, rect.top, abs(rect.right - rect.left), abs(rect.bottom - rect.top), SWP_SHOWWINDOW);    }    void cancelTopMost(HWND hwnd){        RECT rect;        GetWindowRect(hwnd, &rect);        SetWindowPos(hwnd, HWND_NOTOPMOST, rect.left, rect.top, abs(rect.right - rect.left), abs(rect.bottom - rect.top), SWP_SHOWWINDOW);    }

设置窗口前景

    void showWndTop(HWND hWnd){        if (!::IsWindow(hWnd))            return;        if (!::SetForegroundWindow(hWnd)) {            WinParameter winParameter;            ::SetForegroundWindow(hWnd)        }    }

WinParameter是为了解决某些特殊情况下设置失败的问题

#ifndef WINPARAMETER_H#define WINPARAMETER_Hclass WinParameter {public:    WinParameter();    ~WinParameter();private:    unsigned long  m_lockTimeOut;};#endif // WINPARAMETER_H///////////////////////////////////////////////////////#include "winparameter.h"#include <windows.h>WinParameter::WinParameter(){    m_lockTimeOut = 0;    HWND  hCurrWnd = ::GetForegroundWindow();    unsigned long dwThisTID = ::GetCurrentThreadId();    unsigned long dwCurrTID = ::GetWindowThreadProcessId(hCurrWnd,0);    //we need to bypass some limitations from Microsoft :)    if(dwThisTID != dwCurrTID)    {        ::AttachThreadInput(dwThisTID, dwCurrTID, TRUE);        ::SystemParametersInfo(SPI_GETFOREGROUNDLOCKTIMEOUT,0,&m_lockTimeOut,0);        ::SystemParametersInfo(SPI_SETFOREGROUNDLOCKTIMEOUT,0,0,SPIF_SENDWININICHANGE | SPIF_UPDATEINIFILE);        ::AllowSetForegroundWindow(ASFW_ANY);    }}WinParameter::~WinParameter(){    HWND  hCurrWnd = ::GetForegroundWindow();    unsigned long dwThisTID = ::GetCurrentThreadId();    unsigned long dwCurrTID = ::GetWindowThreadProcessId(hCurrWnd,0);    if(dwThisTID != dwCurrTID)    {        ::SystemParametersInfo(SPI_SETFOREGROUNDLOCKTIMEOUT,0,(PVOID)m_lockTimeOut,SPIF_SENDWININICHANGE | SPIF_UPDATEINIFILE);        ::AttachThreadInput(dwThisTID, dwCurrTID, FALSE);    }}

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