[原创]：一个可以在CAD中实现TOOLTIP功能的类

wmao

CPopupTipWnd::CPopupTipWnd()
{
        RegisterWindowClass();
}

CPopupTipWnd::~CPopupTipWnd()
{

}


BEGIN_MESSAGE_MAP(CPopupTipWnd, CWnd)
        //{{AFX_MSG_MAP(CPopupTipWnd)
                // NOTE - the ClassWizard will add and remove mapping macros here.
        //}}AFX_MSG_MAP
END_MESSAGE_MAP()


/////////////////////////////////////////////////////////////////////////////
// CPopupTipWnd message handlers

BOOL CPopupTipWnd::Create(CWnd *pParentWnd)
{

        _ASSERTE(pParentWnd);

        m_pParentWnd = pParentWnd;

        DWORD dwStyle = WS_BORDER | WS_POPUP;
        DWORD dwExStyle = WS_EX_TOOLWINDOW | WS_EX_TOPMOST;

        BOOL bCreated = CreateEx(dwExStyle,
                "CPopupTipWnd",
                NULL,
                dwStyle,
                0, 0, 0, 0,
                NULL, NULL, NULL);

        return bCreated;
}



bool CPopupTipWnd::RegisterWindowClass()
{
        WNDCLASS wndcls = {0};
        wndcls.style = CS_SAVEBITS | CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW;
        wndcls.lpfnWndProc = ::DefWindowProc;
        wndcls.hCursor = (HCURSOR)::LoadImage(NULL, IDC_ARROW, IMAGE_CURSOR, 0, 0, LR_DEFAULTSIZE);
        wndcls.hbrBackground = (HBRUSH)(COLOR_INFOBK + 1);
        wndcls.lpszClassName = "CPopupTipWnd";

        if(!::RegisterClass(&wndcls))
        {
//                AfxThrowResourceException();
                return false;
        }

        return true;


}

void CPopupTipWnd::ShowPopupWindow(CString strText, CPoint point, CRect rect)
{

        // If there is no password, instead hide the window and be done with it
        if(strText.IsEmpty())
        {
                HidePopupWindow();
                return;
        }

        CClientDC dc(this);

        // Use same font as parent window
        CFont *pOldFont = dc.SelectObject(m_pParentWnd->GetFont());

        // Calculate the window size.
        CSize sizeText = dc.GetTextExtent(strText);
        CSize sizeWindow;
        sizeWindow.cx = sizeText.cx + 2 * 3;
        sizeWindow.cy = sizeText.cy + 2 * 3;
       

        // Calculate window rectangle position on screen
        CRect rectWindow;
        rectWindow.left = rect.left;
        rectWindow.right = rectWindow.left + sizeWindow.cx;
        rectWindow.top = rect.top - (sizeWindow.cy + 20);
        if(rectWindow.top <= 0)
                rectWindow.top = rect.bottom + 20;
        rectWindow.bottom = rectWindow.top + sizeWindow.cy;

        // Display window
        SetWindowPos(&wndTop,
                rectWindow.left,
                rectWindow.top,
                rectWindow.Width(),
                rectWindow.Height(),
                SWP_SHOWWINDOW | SWP_NOACTIVATE);


       

        // Draw information in window
        dc.SetBkMode(TRANSPARENT);
        dc.DrawText(strText, CRect(0, 0, sizeWindow.cx, sizeWindow.cy), DT_CENTER | DT_VCENTER | DT_SINGLELINE);
        dc.SelectObject(pOldFont);

}

void CPopupTipWnd::HidePopupWindow()
{

        ShowWindow(SW_HIDE);

}

XDSoft

最初由 wmao 发布
[B]CPopupTipWnd::CPopupTipWnd()
{
        RegisterWindowClass();
}

CPopupTipWnd::~CPopupTipWnd()
{

}


BEGIN_MESSAGE_MAP(CPopupTipWnd, CWnd)
        //{{AFX_MSG_MAP(CPopupTipWnd)
                // NOTE - the ClassWi... [/B]

谢谢，加5分。

wmao

在编译通过后，选择主菜单的“提示工具”，在出现的对话框上单击左键出现提示框，单击右键隐藏提示框