SetButtonInfo,总报错PButton=null ?

[masterjames]

class CStyleBar : public CMFCToolBar
{
public:
	CComboBox   m_comboBox;
	CFont       m_font;
};
static UINT BASED_CODE styles[] =
{
	// same order as in the bitmap 'styles.bmp'
	ID_SEPARATOR,           // for combo box (placeholder)
	//ID_SEPARATOR


};

int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
	 if (!m_wndStyleBar.Create(this, WS_CHILD|WS_VISIBLE|CBRS_TOP|
			CBRS_TOOLTIPS|CBRS_FLYBY, IDW_STYLES) ||
	//				!m_wndStyleBar.LoadBitmap(IDB_MENU_IMAGES_16) ||
		!m_wndStyleBar.SetButtons(styles, sizeof(styles)/sizeof(UINT)))
	{
		TRACE0("Failed to create stylebar\n");
		return FALSE;       // fail to create
	}



	// Create the combo box

        
	 if (!m_wndStyleBar.m_comboBox.Create(
			CBS_DROPDOWNLIST|WS_VISIBLE|WS_TABSTOP,
			CRect(0, 0, 200, 280), &m_wndStyleBar, IDW_COMBO))
	{
		TRACE0("Failed to create combo-box\n");
		return FALSE;
	}

   	m_wndStyleBar.SetButtonInfo(0,IDW_COMBO, TBBS_SEPARATOR, 0);
}

错误：CMFCToolBarButton* pButton = GetButton(nIndex);
	if (pButton == NULL)
	{
		ASSERT(FALSE);
		return;
	}

[schlafenhamster]

GetButton(nIndex);//??

[masterjames]

这个是调试错误信息
void CMFCToolBar::SetButtonInfo(int nIndex, UINT nID, UINT nStyle, int iImage)
{
ASSERT_VALID(this);

CMFCToolBarButton* pButton = GetButton(nIndex);
if (pButton == NULL)
{
ASSERT(FALSE);
return;
}

ASSERT_VALID(pButton);

pButton->m_nStyle = nStyle;
pButton->m_nID = nID;
pButton->SetImage(iImage);

if ((nStyle & TBBS_SEPARATOR) && iImage > 0) // iImage parameter is a button width!
{
AdjustLayout();
}

InvalidateButton(nIndex);
}

[masterjames]

ASSERT(FALSE);

[schlafenhamster]

SetButtonInfo(int nIndex, UINT nID, UINT nStyle, int iImage)
nIndex 不对吧。

[masterjames]

那应该是多少呢

[schlafenhamster]

你要找到那个 id 才行

[schlafenhamster]

vc6:
int idx=0;
while(m_wndToolBar.GetItemID(idx) != ID_COMBO_IN_BAR) idx++;