The study of Programming Windows with MFC--Common Control

刺骨的言语ヽ痛彻心扉 2022-07-12 14:20 150阅读 0赞

1.**The Common Controls**

<table style="width: 95%;"> 
 <tbody> 
 <tr> 
 <th>Control Type</th> 
 <th>WNDCLASS</th> 
 <th>WNDCLASS Alias</th> 
 <th>MFC Class</th> 
 </tr> 
 <tr> 
 <td>Animation</td> 
 <td>"SysAnimate32"</td> 
 <td>ANIMATE_CLASS</td> 
 <td>CAnimateCtrl</td> 
 </tr> 
 <tr> 
 <td>ComboBoxEx*</td> 
 <td>"ComboBoxEx32"</td> 
 <td>WC_COMBOBOXEX</td> 
 <td>CComboBoxEx</td> 
 </tr> 
 <tr> 
 <td>Date-Time*</td> 
 <td>"SysDateTimePick32"</td> 
 <td>DATETIMEPICK_CLASS</td> 
 <td>CDateTimeCtrl</td> 
 </tr> 
 <tr> 
 <td>Header</td> 
 <td>"SysHeader32"</td> 
 <td>WC_HEADER</td> 
 <td>CHeaderCtrl</td> 
 </tr> 
 <tr> 
 <td>Hotkey</td> 
 <td>"msctls_hotkey32"</td> 
 <td>HOTKEY_CLASS</td> 
 <td>CHotKeyCtrl</td> 
 </tr> 
 <tr> 
 <td>Image list</td> 
 <td>N/A</td> 
 <td>N/A</td> 
 <td>CImageList</td> 
 </tr> 
 <tr> 
 <td>IP address**</td> 
 <td>"SysIPAddress32"</td> 
 <td>WC_IPADDRESS</td> 
 <td>CIPAddressCtrl</td> 
 </tr> 
 <tr> 
 <td>List view</td> 
 <td>"SysListView32"</td> 
 <td>WC_LISTVIEW</td> 
 <td>CListCtrl</td> 
 </tr> 
 <tr> 
 <td>Month calendar*</td> 
 <td>"SysMonthCal32"</td> 
 <td>MONTHCAL_CLASS</td> 
 <td>CMonthCalCtrl</td> 
 </tr> 
 <tr> 
 <td>Progress</td> 
 <td>"msctls_progress32"</td> 
 <td>PROGRESS_CLASS</td> 
 <td>CProgressCtrl</td> 
 </tr> 
 <tr> 
 <td>Property sheet</td> 
 <td>N/A</td> 
 <td>N/A</td> 
 <td>CPropertySheet</td> 
 </tr> 
 <tr> 
 <td>Rebar*</td> 
 <td>"ReBarWindow32"</td> 
 <td>REBARCLASSNAME</td> 
 <td>CReBarCtrl</td> 
 </tr> 
 <tr> 
 <td>Rich edit</td> 
 <td>"RichEdit20A" (ANSI) or "RichEdit20W" (Unicode) </td> 
 <td>RICHEDIT_CLASS</td> 
 <td>CRichEditCtrl</td> 
 </tr> 
 <tr> 
 <td>Slider</td> 
 <td>"msctls_trackbar32"</td> 
 <td>TRACKBAR_CLASS</td> 
 <td>CSliderCtrl</td> 
 </tr> 
 <tr> 
 <td>Spin button</td> 
 <td>"msctls_updown32"</td> 
 <td>UPDOWN_CLASS</td> 
 <td>CSpinButtonCtrl</td> 
 </tr> 
 <tr> 
 <td>Status bar</td> 
 <td>"msctls_statusbar32"</td> 
 <td>STATUSCLASSNAME</td> 
 <td>CStatusBarCtrl</td> 
 </tr> 
 <tr> 
 <td>Tab</td> 
 <td>"SysTabControl32"</td> 
 <td>WC_TABCONTROL</td> 
 <td>CTabCtrl</td> 
 </tr> 
 <tr> 
 <td>Toolbar</td> 
 <td>"ToolbarWindow32"</td> 
 <td>TOOLBARCLASSNAME</td> 
 <td>CToolBarCtrl</td> 
 </tr> 
 <tr> 
 <td>ToolTip</td> 
 <td>"tooltips_class32"</td> 
 <td>TOOLTIPS_CLASS</td> 
 <td>CToolTipCtrl</td> 
 </tr> 
 <tr> 
 <td>Tree view</td> 
 <td>"SysTreeView32"</td> 
 <td>WC_TREEVIEW</td> 
 <td>CTreeCtrl</td> 
 </tr> 
 </tbody> 
</table>

\* Requires Internet Explorer 3.0 or later.

\*\* Requires Internet Explorer 4.0 or later.

2.Creating a Common Control

\#include <afxcmn.h> 
      ![Image 1][] 
   CProgressCtrl wndProgress; 
   wndProgress.Create (WS\_CHILD ¦ WS\_VISIBLE ¦ WS\_BORDER,CRect (x1, y1, x2, y2), this, IDC\_PROGRESS); 
   2)

CONTROL "", IDC\_PROGRESS, PROGRESS\_CLASS, WS\_BORDER, 32, 32, 80, 16

Once you've created a common control, you manipulate it using member functions of the corresponding control class.

DDX\_Control (pDX, IDC\_PROGRESS, m\_wndProgress);//This statement must appear in a dialog class's *DoDataExchange* function.

When you use the common controls in an SDK-style application, you must call either *::InitCommonControls* or the newer *::InitCommonControlsEx* to load Comctl32.dll and register the controls'    WNDCLASSes before creating the first control. In an MFC application, MFC calls these functions for you.

3.Processing Notifications: The WM\_NOTIFY Message

typedef struct \_NM\_TREEVIEW \{  
      NMHDR    hdr;  
      UINT     action;  
      TV\_ITEM  itemOld;  
      TV\_ITEM  itemNew;  
      POINT    ptDrag;  
  \} NM\_TREEVIEW;

typedef struct \_TV\_DISPINFO \{  
    NMHDR   hdr;  
    TV\_ITEM item;  
  \} TV\_DISPINFO;

How do you know what pointer was cast by lParam?

NMHDR\* pnmh = (NMHDR\*) lParam;  
   switch (pnmh->code) \{  
  
   case TVN\_ITEMEXPANDED:  
      NM\_TREEVIEW\* pnmtv = (NM\_TREEVIEW\*) pnmh;  
    // Process the notification.  
    break;  
  
   case TVN\_GETDISPINFO:  
      NM\_DISPINFO\* pnmdi = (NM\_DISPINFO\*) pnmh;  
    // Process the notification.  
    break;  
   \}

ON\_NOTIFY (TVN\_ITEMEXPANDED, IDC\_TREEVIEW, OnItemExpanded)  
  ON\_NOTIFY (TVN\_GETDISPINFO, IDC\_TREEVIEW, OnGetDispInfo)

void CMyWindow::OnItemExpanded (NMHDR\* pnmh, LRESULT\* pResult)  
  \{  
       NM\_TREEVIEW\* pnmtv = (NM\_TREEVIEW\*) pnmh;  
      // Process the notification.  
  \}  
  
  void CMyWindow::OnGetDispInfo (NMHDR\* pnmh, LRESULT\* pResult)  
  \{  
       NM\_DISPINFO\* pnmdi = (NM\_DISPINFO\*) pnmh;  
       // Process the notification.  
  \}

[Image 1]: