CListBox::Create

  • 项目

BOOLCreate(DWORDdwStyle**,constRECT&rect,CWnd*pParentWnd,UINTnID);**

Return Value

Nonzero if successful; otherwise 0.

Parameters

dwStyle

Specifies the style of the list box. Apply any combination of list-box styles to the box. 

rect

Specifies the list-box size and position. Can be either a CRect object or a RECT structure.

pParentWnd

Specifies the list box’s parent window (usually a CDialog object). It must not be NULL.

nID

Specifies the list box’s control ID.

Remarks

You construct a CListBox object in two steps. First call the constructor, then call Create, which initializes the Windows list box and attaches it to the CListBox object.

When Create executes, Windows sends the WM_NCCREATE, WM_CREATE, WM_NCCALCSIZE, and WM_GETMINMAXINFO messages to the list-box control.

These messages are handled by default by the OnNcCreate, OnCreate, OnNcCalcSize, and OnGetMinMaxInfo member functions in the CWnd base class. To extend the default message handling, derive a class from CListBox, add a message map to the new class, and override the preceding message-handler member functions. Override OnCreate, for example, to perform needed initialization for a new class.

Apply the following window styles to a list-box control. 

  • WS_CHILD   Always

  • WS_VISIBLE   Usually

  • WS_DISABLED   Rarely

  • WS_VSCROLL   To add a vertical scroll bar

  • WS_HSCROLL   To add a horizontal scroll bar

  • WS_GROUP   To group controls

  • WS_TABSTOP   To allow tabbing to this control

Example

// pParentWnd is an external pointer to the parent window.
extern CWnd* pParentWnd;
// The pointer to my list box.
extern CListBox* pmyListBox;

pmyListBox->Create(WS_CHILD|WS_VISIBLE|LBS_STANDARD|WS_HSCROLL,
   CRect(10,10,200,200), pParentWnd, 1);

CListBox Overview |  Class Members |  Hierarchy Chart

See Also   CListBox::CListBox