Owner Drawn Font Selection Combobox

Following is a owner drawn Combo Box which will be filled with the names of
the fonts.. And each entry is in same font as selected. This is something
similar to the one in Netscape 4.x font selector.

This is pretty simple. All it does is to enumerate the fonts and store the
LOGFONTs in the Item data. and when the painting is to be done, takes the
value from the Item data and paints the item..

It has a very nice effect.. Since this does only the font names, you might
need another combobox for the sizes..

You can also set the colors for the highlight and normal..

To use this, Create a ComboBox in your Resource Editor, Set the Owner draw
to “Variable” and check the “Has strings”.

Then, In the OnInitDialog () or OnInitialUpdate() call the function
FillFonts (). Thats it.. You have got your fonts in the Combo box. To get
the selected font, Use GetSelFont () with LOGFONT& as the argument. this
argument will be filled in upon return.

P.S:If you make the ComboBox to be a “Drop down List” then the edit
window (actually the static control window) will hav the name in the same
font as selected.. Otherwise, it will be in the dialog box’s font..

//*************************************************************************
//CCustComboBox.h

#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
// CustComboBox.h : header file
//

///////////////////////////////////////////////////////////////////////////
//
// CCustComboBox window

typedef enum {FONTS} STYLE;      //Why have I enumerated, Cos, Maybe I might want something other than Fonts here


class CCustComboBox : public CComboBox
{
// Construction
public:
     CCustComboBox();
     CCustComboBox (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 ~CCustComboBox();

     // 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_)





//**************************************************************************
// CustComboBox.cpp : implementation file
//

#include "stdafx.h"
#include "CustComboBox.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..

///////////////////////////////////////////////////////////////////////////
//
// CCustComboBox

//Initial values of the text and highlight stuff

CCustComboBox::CCustComboBox()
{
     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;

}


CCustComboBox::CCustComboBox (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;
}

CCustComboBox::~CCustComboBox()
{
}


BEGIN_MESSAGE_MAP(CCustComboBox, CComboBox)
     //{{AFX_MSG_MAP(CCustComboBox)
     ON_WM_CREATE()
     ON_WM_DESTROY()
     //}}AFX_MSG_MAP
     ON_MESSAGE (WM_INITFONTS,OnInitFonts)
END_MESSAGE_MAP()

///////////////////////////////////////////////////////////////////////////
//
// CCustComboBox message handlers


void CCustComboBox::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 CCustComboBox::MeasureItem(LPMEASUREITEMSTRUCT lpMeasureItemStruct)
{
}

void CCustComboBox::DrawFont(LPDRAWITEMSTRUCT lpDIS)
{
     CDC* pDC = CDC::FromHandle(lpDIS->hDC);
     CRect rect;

     TRACE0 ("In Draw Fontn");

    // 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 CCustComboBox::InitFonts ()
{
     CDC *pDC = GetDC ();
     ResetContent (); //Delete whatever is there
     EnumFonts (pDC->GetSafeHdc(),NULL,(FONTENUMPROC) EnumFontProc,(LPARAM)this);//Enumerate
     m_bInitOver = TRUE;
}

BOOL CALLBACK CCustComboBox::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 = ((CCustComboBox *) lpData)->AddString(lplf->lfFaceName);
          LPLOGFONT lpLF;
          lpLF = new LOGFONT;
          CopyMemory ((PVOID) lpLF,(CONST VOID *) lplf,sizeof (LOGFONT));
          ((CCustComboBox *) lpData)->SetItemData (index,(DWORD) lpLF);
     }
     return TRUE;
}

int CCustComboBox::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
     if (CComboBox::OnCreate(lpCreateStruct) == -1)
          return -1;

     // TODO: Add your specialized creation code here
     if (m_enStyle == FONTS)
     {
          PostMessage (WM_INITFONTS,0,0);
     }
     return 0;
}

long CCustComboBox::OnInitFonts (WPARAM, LPARAM)
{
     InitFonts ();
     return 0L;
}


void CCustComboBox::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 CCustComboBox::FillFonts ()
{
     m_enStyle = FONTS;
     PostMessage (WM_INITFONTS,0,0); //Process in one place
}

int  CCustComboBox::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 CCustComboBox::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 :-)
}

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