Menu-弹出菜单自绘

示例代码:

class CMyWindowMenu
{
public:
    HWINDOW m_hWindow;
    HELE   m_hButton;
    CMyWindowMenu()
    {
        Init();
    }
    void Init()
    {
        m_hWindow = XWnd_Create(0, 0, 300, 200, L"炫彩界面库窗口", NULL, window_style_default);
 
        m_hButton = XBtn_Create(20, 50, 80, 30, L"弹出菜单", m_hWindow);
        XEle_RegEventCPP1(m_hButton, XE_BNCLICK, &CMyWindowMenu::OnBtnClick);
 
    //  XWnd_RegEventCPP(m_hWindow, XWM_MENU_DRAW_BACKGROUND, &CMyWindowMenu::OnWndMenuDrawBackground);
    //  XWnd_RegEventCPP(m_hWindow, XWM_MENU_DRAWITEM, &CMyWindowMenu::OnWndMenuDrawItem);
        
        XEle_RegEventCPP(m_hButton, XE_MENU_DRAW_BACKGROUND, &CMyWindowMenu::OnWndMenuDrawBackground);
        XEle_RegEventCPP(m_hButton, XE_MENU_DRAWITEM, &CMyWindowMenu::OnWndMenuDrawItem);
 
        XWnd_AdjustLayout(m_hWindow);
        XWnd_ShowWindow(m_hWindow, SW_SHOW);
    }
    BOOL OnBtnClick(HELE hEventEle, BOOL *pbHandled)
    {
        RECT rcButton;
        XEle_GetRect(hEventEle, &rcButton);
        POINT pt = { rcButton.left,rcButton.bottom };
 
        //创建弹出菜单
        HMENUX hMenu = XMenu_Create();
        XMenu_EnableDrawItem(hMenu, TRUE);
        XMenu_EnableDrawBackground(hMenu, TRUE);
        XMenu_AddItemIcon(hMenu, 201, L"111", XC_ID_ROOT, XImage_LoadFile(L"image\\logo.png"), menu_item_flag_check);
        XMenu_AddItem(hMenu, 202, L"222", 0, menu_item_flag_check);
        //XMenu_AddItem(hMenu, 0, L"",XC_ID_ROOT,menu_item_flag_separator); //分隔栏
        XMenu_AddItem(hMenu, 203, L"333");
 
        XMenu_AddItem(hMenu, 204, L"444", 203);
        XMenu_AddItem(hMenu, 205, L"555", 203);
        XMenu_AddItem(hMenu, 206, L"666", 203);
 
        XMenu_AddItem(hMenu, 207, L"777", 206);
        XMenu_AddItem(hMenu, 208, L"888", 206);
        XMenu_AddItem(hMenu, 209, L"999", 206);
 
        ::ClientToScreen(XWnd_GetHWND(m_hWindow), &pt);
        XMenu_Popup(hMenu, XWnd_GetHWND(m_hWindow), pt.x, pt.y, m_hButton);
        return 0;
    }
    int  OnWndMenuDrawBackground(HDRAW hDraw, menu_drawBackground_ *pInfo, BOOL *pbHandled)
    {
         *pbHandled = TRUE;
        RECT rect;
        XWnd_GetClientRect(pInfo->hWindow, &rect);
 
        XDraw_SetBrushColor(hDraw, COLORREF_MAKE(59, 64, 68,255));
        XDraw_FillRect(hDraw, &rect);
        return 0;
    }
    int  OnWndMenuDrawItem(HDRAW hDraw, menu_drawItem_* pInfo, BOOL *pbHandled)
    {
         *pbHandled = TRUE;
        int leftWidth = XMenu_GetLeftWidth(pInfo->hMenu);
        int leftSpaceText = XMenu_GetLeftSpaceText(pInfo->hMenu);
 
        if (pInfo->nState & menu_item_flag_separator) //分割栏
        {
            XDraw_SetBrushColor(hDraw, RGB(82, 88, 94));
            XDraw_DrawLine(hDraw, pInfo->rcItem.left + 3, pInfo->rcItem.top,
                pInfo->rcItem.right - 3, pInfo->rcItem.top);
            return 0;
        }
 
        if (pInfo->nState & menu_item_flag_select) //选择项
        {
            XDraw_GradientFill2(hDraw, &pInfo->rcItem, COLORREF_MAKE(63, 151, 216, 255), COLORREF_MAKE(48, 134, 198, 255), GRADIENT_FILL_RECT_V);
        } else
        {
            if (XC_ID_ERROR != XMenu_GetNextSiblingItem(pInfo->hMenu, pInfo->nID))
            {
                XDraw_SetBrushColor(hDraw, COLORREF_MAKE(82, 88, 94,255));
                XDraw_DrawLine(hDraw, pInfo->rcItem.left + 3, pInfo->rcItem.bottom - 1,
                    pInfo->rcItem.right - 3, pInfo->rcItem.bottom - 1);
            }
        }
        if (pInfo->nState & menu_item_flag_popup) //弹出项
        {
            //绘制右三角
            POINT  pt[3];
            pt[0].x = pInfo->rcItem.right - 12;
            pt[0].y = pInfo->rcItem.top + 5;
            pt[1].x = pInfo->rcItem.right - 12;
            pt[1].y = pInfo->rcItem.top + 15;
            pt[2].x = pInfo->rcItem.right - 7;
            pt[2].y = pInfo->rcItem.top + 10;
            XDraw_SetBrushColor(hDraw, COLORREF_MAKE(0, 0, 0, 255));
            XDraw_FillPolygon(hDraw, pt, 3);
        }
 
        if (pInfo->nState &menu_item_flag_check) //勾选
        {
            XDraw_SetBrushColor(hDraw, COLORREF_MAKE(0, 0, 0,255));
            XDraw_DrawLine(hDraw, pInfo->rcItem.left + 5, pInfo->rcItem.top + 8, pInfo->rcItem.left + 9, pInfo->rcItem.top + 13);
            XDraw_DrawLine(hDraw, pInfo->rcItem.left + 9, pInfo->rcItem.top + 13, pInfo->rcItem.left + 17, pInfo->rcItem.top + 5);
        }
 
        RECT rc = pInfo->rcItem;
        rc.left = leftWidth + 5;
 
        const wchar_t *pText = pInfo->pText;
        if (pInfo->nState & menu_item_flag_disable)//禁用项
        {
            if (pText)
            {
                XDraw_SetBrushColor(hDraw, COLORREF_MAKE(100, 100, 100,255));
                XDraw_SetTextAlign(hDraw, DT_VCENTER | DT_SINGLELINE);
                XDraw_DrawText(hDraw, pText, wcslen(pInfo->pText), &rc);
            }
        } else
        {
            if (pInfo->hIcon)
            {
                int iconWidth = XImage_GetHeight(pInfo->hIcon);
                int iconHeight = XImage_GetWidth(pInfo->hIcon);
                int height = pInfo->rcItem.bottom - pInfo->rcItem.top;
                if (height >= 2 && iconWidth >= 2 && iconHeight >= 2)
                {
                    int top = (height - iconHeight) / 2;
                    int left = (leftWidth - iconWidth) / 2;
                    if (top < 0) top = 0;
                    if (left < 0) left = 0;
                    XDraw_Image(hDraw, pInfo->hIcon, left, pInfo->rcItem.top + top);
                }
            }
            if (pText)
            {
                XDraw_SetBrushColor(hDraw, COLORREF_MAKE(238, 238, 238,255));
                XDraw_SetTextAlign(hDraw, DT_VCENTER | DT_SINGLELINE);
                XDraw_DrawText(hDraw, pText, wcslen(pInfo->pText), &rc);
            }
        }
        return 0;
    }
};
 
int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow)
{
    XInitXCGUI(TRUE);
    CMyWindowMenu  MyWindow;
    XRunXCGUI();
    XExitXCGUI();
    return TRUE;
}

截图: