How to validate Combobox items without expanding the combobox.

Hi,
I want to select the combobox item.
before selecting an item I want to validate whether the item is present in the combobox list.
while validating the item at for loop the combobox get expanded.
I don't want to expand it.
if (children[index].Name == entryToSelect)
isExists =
true;
break;
Please share your thoughts.....

Hi Rosy D,
I also try to test it in my side.
As far as I know we could collect all items with ComboBox.ObjectCollection class:
http://msdn.microsoft.com/en-us/library/system.windows.forms.combobox.objectcollection(v=vs.110).aspx
http://stackoverflow.com/questions/17709363/check-if-user-input-are-in-the-combobox-items
But it seems that I'm failed to use this method in coded UI tests, so I’m afraid that it has this limitation for this issue.
We would use the
GetChildren method,
but as far as I know, we would expand this control.
Reference:
https://social.msdn.microsoft.com/Forums/en-US/6f71fed3-777f-433a-87b0-e4190ff06632/telerik-combobox-returned-as-an-editbox-vs-combobox?forum=vsautotest
http://stackoverflow.com/questions/18079008/get-all-values-from-a-listbox-using-coded-ui-test-and-select-it
Best Regards,
Jack
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How to align the item text in the combobox vertically centred after increasing the height of the combobox in mfc?

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Code snippet for owner drawn combobox:
#if !defined(AFX_CUSTCOMBOBOX_H__F8528B4F_396E_11D1_9384_00A0248F6145__INCLUDED_)
#define AFX_CUSTCOMBOBOX_H__F8528B4F_396E_11D1_9384_00A0248F6145__INCLUDED_
#if _MSC_VER >= 1000
#pragma once
#endif // _MSC_VER >= 1000
typedef enum {FONTS} STYLE; //Why have I enumerated, Cos, Maybe I might want something other than Fonts here
class COwnerDrawCombo : public CComboBox
// Construction
public:
COwnerDrawCombo();
COwnerDrawCombo (STYLE);
// Attributes
public:
void SetHilightColors (COLORREF hilight,COLORREF hilightText)
m_clrHilight = hilight;
m_clrHilightText = hilightText;
void SetNormalColors (COLORREF clrBkgnd,COLORREF clrText)
m_clrNormalText = clrText;
m_clrBkgnd = clrBkgnd;
static BOOL CALLBACK EnumFontProc (LPLOGFONT lplf, LPTEXTMETRIC lptm, DWORD dwType, LPARAM lpData);
void FillFonts ();
int GetSelFont (LOGFONT&);
// Operations
public:
// Overrides
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CCustComboBox)
public:
virtual void DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct);
virtual void MeasureItem(LPMEASUREITEMSTRUCT lpMeasureItemStruct);
protected:
virtual void PreSubclassWindow();
//}}AFX_VIRTUAL
// Implementation
public:
virtual ~COwnerDrawCombo();
// Generated message map functions
protected:
STYLE m_enStyle;
COLORREF m_clrHilight;
COLORREF m_clrNormalText;
COLORREF m_clrHilightText;
COLORREF m_clrBkgnd;
BOOL m_bInitOver;
void DrawDefault (LPDRAWITEMSTRUCT);
void DrawFont(LPDRAWITEMSTRUCT);
void InitFonts ();
//{{AFX_MSG(CCustComboBox)
afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);
afx_msg void OnDestroy();
//}}AFX_MSG
afx_msg long OnInitFonts (WPARAM, LPARAM);
DECLARE_MESSAGE_MAP()
//{{AFX_INSERT_LOCATION}}
// Microsoft Developer Studio will insert additional declarations immediately before the previous line.
#endif //!defined(AFX_CUSTCOMBOBOX_H__F8528B4F_396E_11D1_9384_00A0248F6145__INCLUDED_)
// OwnerDrawCombo.cpp : implementation file
#include "stdafx.h"
#include "combobox.h"
#include "OwnerDrawCombo.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
#define WM_INITFONTS (WM_USER + 123)
//I chose 123 cos nobody might use the same exact number.. I can improve this by use RegisterWindowMessage..
// COwnerDrawCombo
//Initial values of the text and highlight stuff
COwnerDrawCombo::COwnerDrawCombo()
m_enStyle = FONTS;
m_clrHilight = GetSysColor (COLOR_HIGHLIGHT);
m_clrNormalText = GetSysColor (COLOR_WINDOWTEXT);
m_clrHilightText = GetSysColor (COLOR_HIGHLIGHTTEXT);
m_clrBkgnd = GetSysColor (COLOR_WINDOW);
m_bInitOver = FALSE;
COwnerDrawCombo::COwnerDrawCombo (STYLE enStyle)
m_enStyle = enStyle;
m_clrHilight = GetSysColor (COLOR_HIGHLIGHT);
m_clrNormalText = GetSysColor (COLOR_WINDOWTEXT);
m_clrHilightText = GetSysColor (COLOR_HIGHLIGHTTEXT);
m_clrBkgnd = GetSysColor (COLOR_WINDOW);
m_bInitOver =FALSE;
COwnerDrawCombo::~COwnerDrawCombo()
BEGIN_MESSAGE_MAP(COwnerDrawCombo, CComboBox)
//{{AFX_MSG_MAP(COwnerDrawCombo)
ON_WM_CREATE()
ON_WM_DESTROY()
//}}AFX_MSG_MAP
ON_MESSAGE (WM_INITFONTS,OnInitFonts)
END_MESSAGE_MAP()
// COwnerDrawCombo message handlers
void COwnerDrawCombo::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
//I might want to add something else someday
switch (m_enStyle)
case FONTS:
DrawFont(lpDrawItemStruct);
break;
//I dont need the MeasureItem to do anything. Whatever the system says, it stays
void COwnerDrawCombo::MeasureItem(LPMEASUREITEMSTRUCT lpMeasureItemStruct)
void COwnerDrawCombo::DrawFont(LPDRAWITEMSTRUCT lpDIS)
CDC* pDC = CDC::FromHandle(lpDIS->hDC);
CRect rect;
TRACE0 ("In Draw Font\n");
// draw the colored rectangle portion
rect.CopyRect(&lpDIS->rcItem);
pDC->SetBkMode( TRANSPARENT );
if (lpDIS->itemState & ODS_SELECTED)
pDC->FillSolidRect (rect,m_clrHilight);
pDC->SetTextColor (m_clrHilightText);
else
pDC->FillSolidRect (rect,m_clrBkgnd);
pDC->SetTextColor (m_clrNormalText);
if ((int)(lpDIS->itemID) < 0) // Well its negetive so no need to draw text
else
CString strText;
GetLBText (lpDIS->itemID,strText);
CFont newFont;
CFont *pOldFont;
((LOGFONT*)lpDIS->itemData)->lfHeight = 90; //9 point size
((LOGFONT*)lpDIS->itemData)->lfWidth = 0;
newFont.CreatePointFontIndirect ((LOGFONT*)lpDIS->itemData);
pOldFont = pDC->SelectObject (&newFont);
pDC->DrawText(strText, rect, DT_LEFT | DT_VCENTER | DT_SINGLELINE);
pDC->SelectObject (pOldFont);
newFont.DeleteObject ();
void COwnerDrawCombo::InitFonts ()
CDC *pDC = GetDC ();
ResetContent (); //Delete whatever is there
EnumFonts (pDC->GetSafeHdc(),NULL,(FONTENUMPROC) EnumFontProc,(LPARAM)this);//Enumerate
m_bInitOver = TRUE;
BOOL CALLBACK COwnerDrawCombo::EnumFontProc (LPLOGFONT lplf, LPTEXTMETRIC lptm, DWORD dwType, LPARAM lpData)
if (dwType == TRUETYPE_FONTTYPE) //Add only TTF fellows, If you want you can change it to check for others
int index = ((COwnerDrawCombo *) lpData)->AddString(lplf->lfFaceName);
LPLOGFONT lpLF;
lpLF = new LOGFONT;
CopyMemory ((PVOID) lpLF,(CONST VOID *) lplf,sizeof (LOGFONT));
((COwnerDrawCombo *) lpData)->SetItemData (index,(DWORD) lpLF);
return TRUE;
int COwnerDrawCombo::OnCreate(LPCREATESTRUCT lpCreateStruct)
if (CComboBox::OnCreate(lpCreateStruct) == -1)
return -1;
// TODO: Add your specialized creation code here
if (m_enStyle == FONTS)
//SetItemHeight(-1,30);
PostMessage (WM_INITFONTS,0,0);
return 0;
long COwnerDrawCombo::OnInitFonts (WPARAM, LPARAM)
InitFonts ();
return 0L;
void COwnerDrawCombo::OnDestroy()
if (m_enStyle == FONTS)
int nCount;
nCount = GetCount ();
for (int i = 0; i < nCount; i++)
delete ((LOGFONT*)GetItemData (i)); //delete the LOGFONTS actually created..
// TODO: Add your message handler code here
CComboBox::OnDestroy();
void COwnerDrawCombo::FillFonts ()
m_enStyle = FONTS;
PostMessage (WM_INITFONTS,0,0); //Process in one place
int COwnerDrawCombo::GetSelFont (LOGFONT& lf)
int index = GetCurSel ();
if (index == LB_ERR)
return LB_ERR;
LPLOGFONT lpLF = (LPLOGFONT) GetItemData (index);
CopyMemory ((PVOID)&lf, (CONST VOID *) lpLF, sizeof (LOGFONT));
return index; //return the index here.. Maybe the user needs it:-)
void COwnerDrawCombo::PreSubclassWindow()
// TODO: Add your specialized code here and/or call the base class
//Tried to do what Roger Onslow did for the button.. Did not work..?? Any R&D guys around :-)
Can anyone please let me know how can I achieve this.
Any help can be appreciated.
Thanks in advance
SivaV

Hi sivavuyyuru,
I cannot find a easy way to make this.
I think you may need to draw your own Combo Box control. And you could change the edit control more like static text. Check the article:
http://www.codeguru.com/cpp/controls/combobox/fontselectioncombos/article.php/c1795/Owner-Drawn-Font-Selection-Combobox.htm
In the resource editor, Owner draw -> variable , Has string->true, type->drop list.
The result:
Best regards,
Shu Hu
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How to validate Combobox items without expanding the combobox.

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