SetMenuItemBitmaps

SetMenuItemBitmaps，函式名稱，如果調用成功會返回非零值，否則為0.

簡介

CMenu::SetMenuItemBitmaps

BOOLSetMenuItemBitmaps(UINTnPosition,UINTnFlags,constCBitmap*pBmpUnchecked,constCBitmap*pBmpChecked);

返回值：如果調用成功會返回非零值，否則為0.

參數

：第一個參數nPosition的取值由第二個參數nFlags的取值決定。如果第二個參數的取值為MF_BYPOSITION，即使用位置索引，那么第一個參數為選單項位置索引；如果第二個參數的取值為MF_BYCOMMAND，那么第一個參數為選單項標示，應該使用該選單項的ID。後兩個參數都是CBitmap類的指針，用來設定與選單項關聯的兩個點陣圖，其中第三個參數表示該選單項未被選中時的點陣圖，第四個參數表示該選單項被選中之後的顯示的點陣圖。

Example

// The code fragment below shows how to associate bitmaps with the

// "Test" menu item. Whether the "Test" menu item is checked or

// unchecked, Windows displays the appropriate bitmap next to the menu

// item. Both IDB_CHECKBITMAP and IDB_UNCHECKBITMAP bitmaps are loaded

// in OnCreate() and destroyed in the destructor of CMainFrame class.

// CMainFrame is a CFrameWnd-derived class.

int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)

{

if (CFrameWnd::OnCreate(lpCreateStruct) == -1) return -1;

// Load bitmaps from resource. Both m_CheckBitmap and m_UnCheckBitmap

// are member variables of CMainFrame class of type CBitmap.

ASSERT(m_CheckBitmap.LoadBitmap(IDB_CHECKBITMAP));

ASSERT(m_UnCheckBitmap.LoadBitmap(IDB_UNCHECKBITMAP));

// Associate bitmaps with the "Test" menu item.

CMenu* mmenu = GetMenu();

CMenu* submenu = mmenu->GetSubMenu(3);

ASSERT(submenu->SetMenuItemBitmaps(ID_HELP_TEST, MF_BYCOMMAND, &m_CheckBitmap, &m_UnCheckBitmap)); // ...

}

CMainFrame::~CMainFrame()

{

// Destroy the bitmap objects if they are loaded successfully // in OnCreate().

if (m_CheckBitmap.m_hObject) m_CheckBitmap.DeleteObject();

if (m_UnCheckBitmap.m_hObject) m_UnCheckBitmap.DeleteObject();

}