www.pudn.com > GGBT.rar > CategoryCombobox.cpp

// CategoryCombobox.cpp : implementation file 
// 
 
#include "stdafx.h" 
#include "testbt.h" 
#include "CategoryCombobox.h" 
 
 
#ifdef _DEBUG 
#define new DEBUG_NEW 
#undef THIS_FILE 
static char THIS_FILE[] = __FILE__; 
#endif 
 
///////////////////////////////////////////////////////////////////////////// 
// CCategoryCombobox 
 
CCategoryCombobox::CCategoryCombobox() 
{ 
} 
 
CCategoryCombobox::~CCategoryCombobox() 
{ 
} 
 
 
BEGIN_MESSAGE_MAP(CCategoryCombobox, CComboBox) 
	//{{AFX_MSG_MAP(CCategoryCombobox) 
	ON_WM_DESTROY() 
	//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
 
///////////////////////////////////////////////////////////////////////////// 
// CCategoryCombobox message handlers 
 
void CCategoryCombobox::DrawItem( LPDRAWITEMSTRUCT pDIStruct ) 
{ 
	assert(m_pimgList); 
 
	static CString sFolder, tmpStr;									// No Need To Reallocate Each Time 
 
	CDC dcContext; 
	CRect rItemRect(pDIStruct->rcItem); 
	CRect rBlockRect(rItemRect); 
	CRect rTextRect(rBlockRect); 
	CBrush brFrameBrush; 
 
	int iItem = pDIStruct -> itemID; 
	int	iState = pDIStruct -> itemState; 
	int iImageIndex = 0; 
	int iIndent; 
 
	COLORREF crColor = GetSysColor(COLOR_WINDOW); 
	COLORREF crNormal = GetSysColor(COLOR_WINDOW); 
	COLORREF crSelected = GetSysColor(COLOR_HIGHLIGHT); 
	COLORREF crText = GetSysColor(COLOR_WINDOWTEXT); 
 
	// Attach the CDC object 
	if(!dcContext.Attach(pDIStruct -> hDC )) 
		return; 
 
	brFrameBrush.CreateStockObject(BLACK_BRUSH); 
 
 
 
	// Draw folder text and icon 
 
	// If an item is selected...	 
	if( iItem != -1 ) 
	{ 
		// Get text for normal and disabled 
		CString sFolder; 
		GetLBText(iItem, sFolder); 
		LPSFOLDER tmpFolder = (LPSFOLDER)GetItemDataPtr(iItem); 
		iIndent = tmpFolder->m_iIndent; 
 
		// if draw edit text, then no indent. 
		if (iState & ODS_COMBOBOXEDIT) 
			iIndent = 1; 
 
		// Calculate icon display area and set the width 
		rBlockRect.DeflateRect(CSize(2, 2)); 
		rBlockRect.right = ICONWIDTH * iIndent; 
 
		// Calculate Text Area 
		// Set start of text offset a bit 
		rTextRect.left += (ICONWIDTH * iIndent) + 2; 
		rTextRect.top += 2; 
		CSize size = dcContext.GetTextExtent(sFolder); 
		rTextRect.right = rTextRect.left + size.cx + 4; 
 
		//////////////////////////////////////////////// 
		// draw focus select. 
		if(iState & ODS_SELECTED) 
		{ 
			dcContext.SetTextColor((0x00FFFFFF & ~(crText))); 
			dcContext.SetBkColor( crSelected ); 
			dcContext.FillSolidRect( &rTextRect, crSelected ); 
		} 
		else 
		{ 
			dcContext.SetTextColor( crText );		 
			dcContext.SetBkColor( crNormal ); 
			dcContext.FillSolidRect( &rTextRect, crNormal ); 
		} 
		 
		// If item has the focus...draw the focus rectangle.  
		// **** useless. 
		if( iState & ODS_FOCUS ) 
			dcContext.DrawFocusRect( &rTextRect ); 
 
 
		//////////////////////////////////////////////// 
		// draw text and image. 
		iImageIndex = tmpFolder->m_iImageIndex; 
		if( iState & ODS_DISABLED ) 
		{ 
			crColor = GetSysColor(COLOR_INACTIVECAPTIONTEXT); 
			dcContext.SetTextColor(crColor); 
			CPoint pt(pDIStruct->rcItem.left, pDIStruct->rcItem.top); 
			pt.x = pDIStruct->rcItem.left + ((iIndent - 1) * ICONWIDTH); 
			m_pimgList->Draw(&dcContext, iImageIndex, pt, ILD_TRANSPARENT); 
		} 
		else 
		{ 
			CPoint pt(pDIStruct->rcItem.left, pDIStruct->rcItem.top); 
			pt.x = pDIStruct->rcItem.left + ((iIndent - 1) * ICONWIDTH); 
			m_pimgList->Draw(&dcContext, iImageIndex, pt, ILD_NORMAL); 
		} 
 
		dcContext.SetBkMode(TRANSPARENT); 
		dcContext.TextOut(rTextRect.left, rTextRect.top, sFolder); 
	} 
 
	// Detach DC 
	dcContext.Detach(); 
} 
 
void CCategoryCombobox::OnDestroy()  
{ 
	DeleteAllItems(); 
	CComboBox::OnDestroy();	 
} 
 
void CCategoryCombobox::DeleteAllItems() 
{ 
	// Iterate through the items destroying all of the 
	// associated data 
 
	LPSFOLDER tmpFolder; 
	int iListCount = GetCount(); 
 
	for (int x = 0; x < iListCount; x++) 
	{ 
		tmpFolder = (LPSFOLDER)GetItemDataPtr(x); 
		if (tmpFolder) 
			delete tmpFolder; 
	} 
 
	ResetContent(); 
}