menudemo.c

CVI教程,用于信号采集系统的多任务开发软件.学习简单,功能实用.

            topLeftValue = (topLeftValue + 1)%5;
            
            /* Set Title of child panel */
            SetPanelAttribute(childPanel, ATTR_TITLE, MU_MakeShortFileName(NULL, fileName, 32));
            SetCtrlVal(childPanel, FILEPANEL_FILENAME, fileName);
            
            /* Display child panel */
            DisplayPanel(childPanel);
            numChildPanels++;
            
            /* Add menu item to WINDOW list */
            status = AddFileNameToWindowMenuList(sWindowMenuListHandle, fileName, childPanel);
    
            DimMenuItems();
            /* sprintf(sMsgBuffer, "You selected to 'open' the following file:\n  %s\n\nNow save or close the file to add it to the 'File' menu.", fileName); */
            /* MessagePopup("Menu Utility Demo",sMsgBuffer); */
        }
        else {
            sprintf(sMsgBuffer, "Failure to LoadPanel.");
            MessagePopup("Menu Utility Demo",sMsgBuffer);
        }    
    }   
    
    return;         
}


/*--------------------------------------------------------------------------*/
/* WINDOWMenuListCallbackFunc()                                               */
/*                                                                          */
/*  Parameters: Standard Menu Callback parameters                           */
/*        Note: "callbackData" will be pointer to                           */
/*              the long filename chosen by user                            */
/*  Return: none                                                            */
/*  Purpose: This menu callback function is called                          */
/*           when a filename is chosen in the list of                       */
/*           files in the FILE menu item                                    */
/*--------------------------------------------------------------------------*/
static void CVICALLBACK WINDOWMenuListCallbackFunc (menuList list, int menuIndex, int event, void *callbackData)
{
    int status;
    tWindowMenuCallbackData *data = callbackData;
   
    if (event == EVENT_DISCARD) {
        if (data)
            free(data);
    } else {
        /*----------------------------------------------*/
        /* Restore and bring to focus                   */
        /*----------------------------------------------*/
        if (data) 
        {
            DisplayPanel(data->panel);
        }    
    }   
    
    return;         
}


/*--------------------------------------------------------------------------*/
/* MainPanelCallback                                                        */
/*--------------------------------------------------------------------------*/
int CVICALLBACK MainPanelCallback (int panel, int event, void *callbackData,
        int eventData1, int eventData2)
{
    switch (event)
        {
        case EVENT_CLOSE:
            FileQuit (0, 0, NULL, panel);
            break;
        }
    return 0;
}


/*----------------------------------------------------------------------------*/
/* FileOpen                                                                       */
/*----------------------------------------------------------------------------*/
void CVICALLBACK FileOpen (int menuBar, int menuItem, void *callbackData,
        int panel)
{
    int status;
    char fileName[MAX_PATHNAME_LEN];
    int childPanel;
    
    /* Get fileName from user */    
    status = FileSelectPopup ("", "*.*", "", "Choose a file to open",
                              VAL_LOAD_BUTTON, 0, 0, 1, 0, fileName);
                          
    if ((status == VAL_EXISTING_FILE_SELECTED) || (status == VAL_NEW_FILE_SELECTED))
    {
        /* Create a child panel to represent the newly opened file */
        if ((childPanel = LoadPanel (panelHandle, "menudemo.uir", FILEPANEL)) >= 0)
        {
            /* Set top and left for child panel */
            SetPanelAttribute(childPanel, ATTR_TOP,  topLeftValue*25+50);
            SetPanelAttribute(childPanel, ATTR_LEFT, topLeftValue*25+25);
            topLeftValue = (topLeftValue + 1)%5;
            
            /* Set Title of child panel */
            SetPanelAttribute(childPanel, ATTR_TITLE, MU_MakeShortFileName(NULL, fileName, 32));
            SetCtrlVal(childPanel, FILEPANEL_FILENAME, fileName);
            
            /* Display child panel */
            DisplayPanel(childPanel);
            numChildPanels++;
            
            /* Add menu item to WINDOW list */
            status = AddFileNameToWindowMenuList(sWindowMenuListHandle, fileName, childPanel);
    
            DimMenuItems();
            sprintf(sMsgBuffer, "You selected to 'open' the following file:\n  %s\n\nNow save or close the file to add it to the 'File' menu.", fileName);
        }
        else sprintf(sMsgBuffer, "Failure to LoadPanel.");
    
        MessagePopup("Menu Utility Demo",sMsgBuffer);
    }
}


/*----------------------------------------------------------------------------*/
/* FileSaveAs                                                                 */
/*----------------------------------------------------------------------------*/
void CVICALLBACK FileSaveAs (int menuBar, int menuItem, void *callbackData, int panel)
{
    int status;
    int childPanel;
    char fileName[MAX_PATHNAME_LEN];
    char oldFileName[MAX_PATHNAME_LEN];
        
    childPanel = GetTopChildWindow(panelHandle);    
    if ((childPanel!=0) && (GetCtrlVal(childPanel, FILEPANEL_FILENAME, oldFileName)==0));
    {
        status = FileSelectPopup ("", "*.*", "", "Choose a filename to save as",
                                  VAL_SAVE_BUTTON, 0, 0, 1, 0, fileName);
                              
        if ((status == VAL_EXISTING_FILE_SELECTED) || (status == VAL_NEW_FILE_SELECTED))
        {
            /* Add menu item to FILE list */
            status = AddFileNameToFileMenuList(sFileMenuListHandle, oldFileName);
            
            /* Remove old menu item from WINDOW list */
            status = RemoveFileNameFromMenuList(sWindowMenuListHandle, oldFileName);
            
            /* Add menu item to WINDOW list */
            SetPanelAttribute(childPanel, ATTR_TITLE, MU_MakeShortFileName(NULL, fileName, 32));
            SetCtrlVal(childPanel, FILEPANEL_FILENAME, fileName);
            status = AddFileNameToWindowMenuList(sWindowMenuListHandle, fileName, childPanel);
        
            DimMenuItems();
            
            sprintf(sMsgBuffer, "The following file was selected to be saved:\n  %s\n\nThe old filename is added to 'File' menu List", fileName);
            MessagePopup("Menu Utility Demo", sMsgBuffer);
        }    
    }    
}


/*----------------------------------------------------------------------------*/
/* FileSave                                                                   */
/*----------------------------------------------------------------------------*/
void CVICALLBACK FileSave (int menuBar, int menuItem, void *callbackData, int panel)
{
    int status;
    char fileName[MAX_PATHNAME_LEN];
    int childPanel;
        
    childPanel = GetTopChildWindow(panelHandle);    
   
    if ((childPanel!=0) && (GetCtrlVal(childPanel, FILEPANEL_FILENAME, fileName)==0));
    {
        sprintf(sMsgBuffer, "The following file was selected to be saved:\n  %s\n", fileName);
        MessagePopup("Menu Utility Demo",sMsgBuffer);
    }
}


/*----------------------------------------------------------------------------*/
/* GetTopChildWindow                                                          */
/*----------------------------------------------------------------------------*/
int GetTopChildWindow(int panelHandle)
{
    int i;
    int panel;
    int childPanels = 0;
    int lowZPlane, lowPanel, zPlane;
    
    GetPanelAttribute (panelHandle, ATTR_NUM_CHILDREN, &childPanels);
    /* Find lowest ZPLANE child window */
    for (i=0;i<childPanels;i++)
    {
        if (i==0)
        {
            GetPanelAttribute (panelHandle, ATTR_FIRST_CHILD, &panel);
            GetPanelAttribute (panel, ATTR_ZPLANE_POSITION, &zPlane);
            lowZPlane = zPlane;
            lowPanel = panel;
        }    
        else 
        {
            GetPanelAttribute (panel, ATTR_NEXT_PANEL, &panel);
            if (panel) 
            {
                GetPanelAttribute (panel, ATTR_ZPLANE_POSITION, &zPlane);
                if (zPlane<lowZPlane) 
                {
                    lowZPlane = zPlane;
                    lowPanel = panel;
                }    
            }    
        }    
    }  
    if (childPanels)
         return lowPanel;
    else return -1;
}


/*----------------------------------------------------------------------------*/
/* FileClose                                                                  */
/*----------------------------------------------------------------------------*/
void CVICALLBACK FileClose (int menuBar, int menuItem, void *callbackData, int panel)
{
    int status;
    char fileName[MAX_PATHNAME_LEN];
    
    if ((panel = GetTopChildWindow(panelHandle))>=0)
    {    
        GetCtrlVal(panel, FILEPANEL_FILENAME, fileName);
        DiscardPanel(panel);
        
        status = AddFileNameToFileMenuList(sFileMenuListHandle, fileName);
        status = RemoveFileNameFromMenuList(sWindowMenuListHandle, fileName);
        
        /* sprintf(sMsgBuffer, "The following file was closed:\n  %s\n\nThe filename is added to 'File' menu List", fileName); */
        /* MessagePopup("Menu Utility Demo",sMsgBuffer); */
        
        numChildPanels--;
        DimMenuItems();
    }    
}


/*----------------------------------------------------------------------------*/
/* FileQuit                                                                   */
/*----------------------------------------------------------------------------*/
void CVICALLBACK FileQuit (int menuBar, int menuItem, void *callbackData, int panel)
{
    int status;
    char *fileName;
    
    if (numChildPanels)
    {
        while ((MU_GetMenuListAttribute (sWindowMenuListHandle, 1, ATTR_MENULIST_ITEM_CALLBACK_DATA, &fileName)==0))
        {
            status = AddFileNameToFileMenuList(sFileMenuListHandle, fileName);
            status = RemoveFileNameFromMenuList(sWindowMenuListHandle, fileName);
        }
        
        sprintf(sMsgBuffer, "You are now exiting, any open files will be saved in the File list");
        MessagePopup("Menu Utility Demo",sMsgBuffer);
        
        numChildPanels = 0;
        DimMenuItems();
    }    
    
    QuitUserInterface (0);
}


/*----------------------------------------------------------------------------*/
/* Help                                                                       */
/*----------------------------------------------------------------------------*/
void CVICALLBACK Help(int menubar, int menuItem, void *callbackData, int panel)
{
    MessagePopup ("MENUUTIL Demo",HELP_MSG);
}


/*--------------------------------------------------------------------------*/
/* HideAllWindows                                                           */
/*--------------------------------------------------------------------------*/
void CVICALLBACK HideAllWindows (int menuBar, int menuItem, void *callbackData,
        int panel)
{
    int childPanels = 0;
    int i;
        
    GetPanelAttribute (panelHandle, ATTR_NUM_CHILDREN, &childPanels);
    
    for (i=0;i<childPanels;i++)
    {
        if (i==0)
            GetPanelAttribute (panelHandle, ATTR_FIRST_CHILD, &panel);
        else 
            GetPanelAttribute (panel, ATTR_NEXT_PANEL, &panel);
            
        if (panel)
            SetPanelAttribute (panel, ATTR_VISIBLE, 0);
    }    
}


/*--------------------------------------------------------------------------*/
/* CloseAllWindows                                                          */
/*--------------------------------------------------------------------------*/
void CVICALLBACK CloseAllWindows (int menuBar, int menuItem, void *callbackData,
        int panel)
{
    int childPanels = 0;
    int i;
    int status;
    char fileName[MAX_PATHNAME_LEN];
    int childPanel;
    
    GetPanelAttribute (panelHandle, ATTR_NUM_CHILDREN, &childPanels);
    
    for (i=0;i<childPanels;i++) 
    {
        childPanel = GetTopChildWindow(panelHandle);    
            
        GetCtrlVal(childPanel, FILEPANEL_FILENAME, fileName);
        status = AddFileNameToFileMenuList(sFileMenuListHandle, fileName);
        status = RemoveFileNameFromMenuList(sWindowMenuListHandle, fileName);
        DiscardPanel(childPanel);
        
        numChildPanels--;
    }    
    
    DimMenuItems();
}