在evc中如何动态改变工具栏按钮图标

[HLandHB]

我这样写程序报错
CToolBarCtrl &pctrl=m_wndToolBar.GetToolBarCtrl();
bitmap1 = pctrl.AddBitmap(1,IDB_BITMAP1); //这句在模拟器上执行报错
int index = m_wndToolBar.CommandToIndex(ID_BTNOTHER);
m_wndToolBar.SetButtonInfo(index, ID_BTNOTHER, TBBS_BUTTON, bitmap1-1);
请问大虾怎么解决?

[无聊客]

This message sets the information for an existing button in a toolbar.

TB_SETBUTTONINFO
wParam = (WPARAM)(INT) iID;
lParam = (LPARAM)(LPTBBUTTONINFO) lptbbi;