CGridEditorComboBox Class Reference

CComboBox for inplace edit. For internal use by CGridColumnTraitCombo. More...

Inheritance diagram for CGridEditorComboBox:

Public Member Functions
	CGridEditorComboBox (int nRow, int nCol, UINT nMaxWidthPixels, UINT nMaxHeightItems, BOOL bShowDropDown)
	CGridEditorComboBox - Constructor.
virtual BOOL	Create (DWORD dwStyle, const RECT &rect, CWnd *pParentWnd, UINT nID)
	Creates the CComboBox control, and subclasses the internal CEdit control to implement special behavior for completing cell value editing. More...
virtual void	EndEdit (bool bSuccess)
	The cell value editor was closed and the entered should be saved. More...

Protected Member Functions
afx_msg void	OnKillFocus (CWnd *pNewWnd)
	WM_KILLFOCUS message handler called when CComboBox is loosing focus to other control. More...
afx_msg void	OnSetFocus (CWnd *pOldWnd)
	WM_SETFOCUS message handler called when CComboBox is receiving focus from other control. More...
afx_msg void	OnDestroy ()
	WM_DESTROY message handler called when CComboBox window is about to be destroyed. More...
afx_msg void	OnDropDown ()
	CBN_DROPDOWN message handler called when the CComboBox control is expanded into a dropdown list. More...
afx_msg void	OnCloseUp ()
	CBN_CLOSEUP message handler called when the CComboBox control dropdown list is closed up. More...
afx_msg void	OnChangeSelection ()
	CBN_SELCHANGE, CBN_SELENDOK message handler called when the selection in the CComboBox control has been modified. More...
afx_msg void	OnChar (UINT nChar, UINT nRepCnt, UINT nFlags)
	WM_CHAR message handler to monitor selection modifications. More...
virtual void	PostNcDestroy ()
	Called by the default OnNcDestroy (WM_NCDESTROY) message handler, when CComboBox window has been be destroyed. More...
virtual BOOL	PreTranslateMessage (MSG *pMsg)
	Hook to proces windows messages before they are dispatched. More...
	DECLARE_MESSAGE_MAP ()

Protected Attributes
CGridEditorComboBoxEdit	m_Edit
	Subclassed edit control inside the CComboBox.
bool	m_Completed
	Ensure the editor only reacts to a single close event.
bool	m_Modified
	Register if selection was modified while the editor was open.
int	m_Row
	The index of the row being edited.
int	m_Col
	The index of the column being edited.
UINT	m_MaxWidthPixels
	Max width (in pixels) of the CComboBox when doing dropdown.
UINT	m_MaxHeightItems
	Max height (in items) of the CComboBox when doing dropdown.
BOOL	m_ShowDropDown
	Show drop down of the CComboBox at edit begin.

Detailed Description

CComboBox for inplace edit. For internal use by CGridColumnTraitCombo.

Member Function Documentation

BOOL CGridEditorComboBox::Create ( DWORD  dwStyle, const RECT &  rect, CWnd *  pParentWnd, UINT  nID  )

virtual

Creates the CComboBox control, and subclasses the internal CEdit control to implement special behavior for completing cell value editing.

Parameters

dwStyle	Specifies the style of the combo box
rect	Points to the position and size of the combo box
pParentWnd	pecifies the combo box's parent window. It must not be NULL.
nID	Specifies the combo box's control ID.

void CGridEditorComboBox::EndEdit ( bool  bSuccess )

virtual

The cell value editor was closed and the entered should be saved.

Parameters

bSuccess

Should the entered cell value be saved

void CGridEditorComboBox::OnChangeSelection ( )

protected

CBN_SELCHANGE, CBN_SELENDOK message handler called when the selection in the CComboBox control has been modified.

void CGridEditorComboBox::OnChar ( UINT  nChar, UINT  nRepCnt, UINT  nFlags  )

protected

WM_CHAR message handler to monitor selection modifications.

Parameters

nChar	Specifies the virtual key code of the given key.
nRepCnt	Repeat count (the number of times the keystroke is repeated as a result of the user holding down the key).
nFlags	Specifies the scan code, key-transition code, previous key state, and context code

void CGridEditorComboBox::OnCloseUp ( )

protected

CBN_CLOSEUP message handler called when the CComboBox control dropdown list is closed up.

void CGridEditorComboBox::OnDestroy ( )

protected

WM_DESTROY message handler called when CComboBox window is about to be destroyed.

Used to unsubclass the internal CEdit control.

void CGridEditorComboBox::OnDropDown ( )

protected

CBN_DROPDOWN message handler called when the CComboBox control is expanded into a dropdown list.

Used to restrict the width of the dropdown list to the max width.

void CGridEditorComboBox::OnKillFocus ( CWnd *  pNewWnd )

protected

WM_KILLFOCUS message handler called when CComboBox is loosing focus to other control.

Used register that cell value editor should close.

Parameters

pNewWnd

Pointer to the window that receives the input focus (may be NULL or may be temporary).

void CGridEditorComboBox::OnSetFocus ( CWnd *  pOldWnd )

protected

WM_SETFOCUS message handler called when CComboBox is receiving focus from other control.

Used to display drop down automatically

Parameters

pOldWnd

Contains the CWnd object that loses the input focus (may be NULL).

void CGridEditorComboBox::PostNcDestroy ( )

protectedvirtual

Called by the default OnNcDestroy (WM_NCDESTROY) message handler, when CComboBox window has been be destroyed.

Used to delete the inplace CComboBox editor object as well. This is necessary when the CComboBox is created dynamically.

BOOL CGridEditorComboBox::PreTranslateMessage ( MSG *  pMsg )

protectedvirtual

Hook to proces windows messages before they are dispatched.

Catch keyboard events that can should cause the cell value editor to close

Parameters

pMsg	Points to a MSG structure that contains the message to process

Returns

Nonzero if the message was translated and should not be dispatched; 0 if the message was not translated and should be dispatched.