【emwin】WM_SetCallback 創建回調函數

@2018-7-11

【小記】

emWin 通過函數 WM_SetCallback ( )  自定義回調函數

> 下段代碼就是通過 MESSAGEBOX 控件的 OK 按鍵實現刪除信息框的對話框，即消息框的背景窗口 DIALOG 刪除了，留下了 TEXT & BUTTON

hWin = MESSAGEBOX_Create("這是一個幫助！\n你覺得這個幫助功能如何？", "幫助", GUI_MESSAGEBOX_CF_MOVEABLE);

WM_SetCallback(hWin, _cbDialogMessage);

static void _cbDialogMessage(WM_MESSAGE *pMsg)
{
    WM_HWIN hWin;
    
    int NCode;
    int Id;    

    hWin = pMsg->hWin;

    switch (pMsg->MsgId) 
    {
        case WM_NOTIFY_PARENT:
            Id = WM_GetId(pMsg->hWinSrc);
            NCode = pMsg->Data.v;
        
            switch (Id) 
            {
                case GUI_ID_OK:
                    switch (NCode) 
                    {
                        case WM_NOTIFICATION_CLICKED:
                            break;
                        case WM_NOTIFICATION_RELEASED:
                            WM_DeleteWindow(hWin);
                            break;
                    }
                    break;
            }
            break;
        
        default:
            WM_DefaultProc(pMsg);
            break;
     }
}