对话框自适应大小ReSize

谁借莪１个温暖的怀抱￠ 2022-08-10 08:54 185阅读 0赞

## 1.在对话框头文件中添加 ##

POINT old;
    void Resize();

## 2.在对话框初始化函数中OnInitDialog 添加以下代码 ##

CRect rect;
    GetClientRect(&rect);
    old.x = rect.right - rect.left;
    old.y = rect.bottom - rect.top;
    int cx = GetSystemMetrics(SM_CXFULLSCREEN);
    int cy = GetSystemMetrics(SM_CYFULLSCREEN);

## 3.在对话框的OnSize()函数中添加 ##

// 最小化的时候不进行控件更新绘制 
    if (nType != SIZE_MINIMIZED)
    { 
        Resize(); 
    }

## 4.添加Resize()函数 ##

void CWeldCtlDlg::ReSize(void){
        float fsp[2];
        POINT Newp; //获取现在对话框的大小
        CRect recta;
        GetClientRect(&recta);     //取客户区大小
        Newp.x = recta.right - recta.left;
        Newp.y = recta.bottom - recta.top;
        fsp[0] = (float)Newp.x / old.x;
        fsp[1] = (float)Newp.y / old.y;
    
        //如果变化率太小则不改变
        if (abs(fsp[0] - 1)< 0.05 && abs(fsp[1] - 1) < 0.05)
        {
            return;
        }
    
        CRect Rect;
        int woc;
        CPoint OldTLPoint, TLPoint; //左上角
        CPoint OldBRPoint, BRPoint; //右下角
        HWND  hwndChild = ::GetWindow(m_hWnd, GW_CHILD);  //列出所有控件
    
        while (hwndChild)
        {
            woc = ::GetDlgCtrlID(hwndChild);//取得ID
    
            GetDlgItem(woc)->GetWindowRect(Rect);
            ScreenToClient(Rect);
            OldTLPoint = Rect.TopLeft();
            TLPoint.x = long(OldTLPoint.x*fsp[0]);
            TLPoint.y = long(OldTLPoint.y*fsp[1]);
            OldBRPoint = Rect.BottomRight();
            BRPoint.x = long(OldBRPoint.x *fsp[0]);
            BRPoint.y = long(OldBRPoint.y *fsp[1]);
            Rect.SetRect(TLPoint, BRPoint);
            GetDlgItem(woc)->MoveWindow(Rect, TRUE);
            hwndChild = ::GetWindow(hwndChild, GW_HWNDNEXT);
        }
        old = Newp;
    }