The Study of Programming Windows with MFC--Slider,Spin,ToolTip

末蓝、 2022-07-12 14:27 131阅读 0赞

**1.Slider**

CSliderCtrl m\_wndSlider;

//  m\_wndSlider.Create(this);   //when and where is it used?

m\_wndSlider.SetRange(0,8);

m\_wndSlider.SetPos(4);

m\_wndSlider.SetTic(2);

m\_wndSlider.SetTic(4);

m\_wndSlider.SetTic(6);

m\_wndSlider.SetSelection (3, 7);

*CSliderCtrl* provides more than two dozen functions you can use to operate on slider controls. Other useful member functions include *SetPageSize*, which sets the number of units the thumb moves when the channel is clicked with the mouse or when Page Up or Page Down is pressed; *GetTic*, *GetTicPos*, *GetTicArray*, and *GetNumTicks*, which return information about tick marks; and *ClearSel*, which removes a selection range. See the MFC documentation for more information regarding these and other *CSliderCtrl* function members.

**2.Spin Button**

EDITTEXT    IDC\_EDIT, 60, 80, 40, 14, ES\_AUTOHSCROLL  
   CONTROL     "", IDC\_SPIN, "msctls\_updown32", UDS\_SETBUDDYINT ¦ UDS\_AUTOBUDDY ¦ UDS\_ALIGNRIGHT, 0, 0, 0, 0

// m\_wndSpinBtn.Create  when and where is it used?

CSpinButtonCtrl  m\_wndSpinBtn;

m\_wndSpinBtn.SetBase(16);  // display hexadecimal numbers

UDACCEL uda\[4\];  
   uda\[0\].nSec = 0;  
   uda\[0\].nInc = 1;  
   uda\[1\].nSec = 2;  
   uda\[1\].nInc = 2;  
   uda\[2\].nSec = 4;  
   uda\[2\].nInc = 10;  
   uda\[3\].nSec = 8;  
   uda\[3\].nInc = 100;  
   pSpinButton->SetAccel (4, uda);

You set a spin button control's range and position with *CSpinButtonCtrl::SetRange* and *CSpinButtonCtrl::SetPos*.

UDACCEL\* puda = new UDACCEL\[nCount\];  
   pSpinButton->GetAccel (nCount, puda);  
   // Do something with the array.  
   delete\[\] puda;

**3.ToolTip**

CToolTipCtrl m\_ctlTt;

m\_ctlTT.Create (this);  
   m\_ctlTT.AddTool (pWnd, \_T ("This is a window"), NULL, 0);  
   m\_ctlTT.AddTool (pWnd, \_T ("This is a rectangle"),CRect (32, 32, 64, 64), IDT\_RECTANGLE);

class CMyToolTipCtrl : public CToolTipCtrl  
   \{  
    public:  
       BOOL AddWindowTool (CWnd\* pWnd, LPCTSTR pszText);  
       BOOL AddRectTool (CWnd\* pWnd, LPCTSTR pszText,   LPCRECT pRect, UINT nIDTool);  
   \};  
  
BOOL CMyToolTipCtrl::AddWindowTool (CWnd\* pWnd, LPCTSTR pszText)  
\{  
    TOOLINFO ti;  
    ti.cbSize = sizeof (TOOLINFO);  
    ti.uFlags = TTF\_IDISHWND ¦ TTF\_SUBCLASS;  
    ti.hwnd = pWnd->GetParent ()->GetSafeHwnd ();  
    ti.uId = (UINT) pWnd->GetSafeHwnd ();  
    ti.hinst = AfxGetInstanceHandle ();  
    ti.lpszText = (LPTSTR) pszText;  
  
    return (BOOL) SendMessage (TTM\_ADDTOOL, 0, (LPARAM) &ti);  
\}  
  
BOOL CMyToolTipCtrl::AddRectTool (CWnd\* pWnd, LPCTSTR pszText,  
    LPCRECT lpRect, UINT nIDTool)  
\{  
    TOOLINFO ti;  
    ti.cbSize = sizeof (TOOLINFO);  
    ti.uFlags = TTF\_SUBCLASS;  
    ti.hwnd = pWnd->GetSafeHwnd ();  
    ti.uId = nIDTool;  
    ti.hinst = AfxGetInstanceHandle ();  
    ti.lpszText = (LPTSTR) pszText;  
    ::CopyRect (&ti.rect, lpRect);  
  
    return (BOOL) SendMessage (TTM\_ADDTOOL, 0, (LPARAM) &ti);  
\}

m\_ctlTT.AddWindowTool (GetDlgItem (IDC\_SLIDER), MAKEINTRESOURCE (IDS\_SLIDER));  
    m\_ctlTT.AddWindowTool (GetDlgItem (IDC\_EDITHORZ),MAKEINTRESOURCE (IDS\_EDITHORZ));  
    m\_ctlTT.AddWindowTool (GetDlgItem (IDC\_EDITVERT),MAKEINTRESOURCE (IDS\_EDITVERT));