Dynamic Create ownerdraw ListBox in Mfc

Question

I have created my own list box with the base class of CListBox. when I use it in the Dialog box it works fine.
but when I try to create dynamic at runtime it gives an error.

here is my code for it

m_LstList= new x_ListBox;  
		m_LstList->Create(WS_CHILD | WS_VISIBLE | WS_BORDER | WS_HSCROLL | WS_VSCROLL |  
			LBS_OWNERDRAWVARIABLE | LBS_HASSTRINGS, rect, m_hWnd, IDC_X_LIST);  

am I doing anything wrong?
or there is any extra setting I have to make inside x_ListBox class

	class x_ListBox : public CListBox  
	{  
public:  
		x_ListBox();  
		virtual ~x_ListBox();  
		LIST_BOX_TYPE m_ListBoxType;  

// my functions for custom draw

	protected:  
		afx_msg void DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct);  
		DECLARE_MESSAGE_MAP()  
  
  
};  

Answer 1

You need to override OnMeasureItem()

-SM

Answer 2

hi - SM

thanks for your reply. but still not working

I added this line

	afx_msg void OnMeasureItem(int nIDCtl, LPMEASUREITEMSTRUCT lpMeasureItemStruct);

can't add any item or String to Listbox

Answer 3

Ok, my Mistake.

sorry above code is I Made a mistake

Added these 2 functions from wizard
afx_msg void MeasureItem(LPMEASUREITEMSTRUCT /lpMeasureItemStruct/);
afx_msg int CompareItem(LPCOMPAREITEMSTRUCT /lpCompareItemStruct/);

now it did not give an error.

but control did not show. (display)

Answer 4

yes. I have.
at first, when I click on the dialog box it does not show. but when I move the mouse it comes like this.

do not know what is wrong. I am having difficulty understanding this.

my Code for this
rect = { pf->m_ValueRc.left - 1, pf->m_ValueRc.bottom, pf->m_ValueRc.right + 1, pf->m_ValueRc.bottom + 250 };
m_LstList= new x_ListBox;
m_LstList->Create(WS_CHILD | WS_VISIBLE | WS_BORDER | WS_HSCROLL | WS_VSCROLL |
LBS_OWNERDRAWVARIABLE | LBS_HASSTRINGS, rect, m_hWnd, IDC_X_LIST);
m_LstList->InitLineWeight();
m_LstList->SetFont(m_hWnd->GetFont());
m_LstList->ShowWindow(SW_SHOW);

thank you for your help.

Answer 5

Yes. you are right. I am trying to make like a Property sheet. I made my own grid UI. and need to pop up when mouse click on a related field

it supposed to be like this.

but it is not taking SetBkMode functions from DrawItem inside xListBox

dcContext.SetBkMode( TRANSPARENT ); // not useing

dcContext.TextOut( TxRc.left, TxRc.top, strColour );

i have use OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor) on dialog box Class to repain Text EditBox only but

if (pWnd == m_Prop.m_TxEdit)  
 {  
 pDC->SetBkMode(TRANSPARENT);  
 pDC->SetTextColor(RGB(200, 200, 200));  
 return m_brBkgnd;  
 }  
 return hbr;  

that image is displayed when I use scroll in Listbox. but when I click on the list box and outside of list box. it like previous image.