ini.c

labwindow 编程的toolbox例程。

                            }    
                        else if (Ini_GetPointerToRawString (g_myInifile,
                                 sectionName, itemName, &stringValue)
                            > 0)
                            {
                            SetCtrlVal (panelHandle, PANEL_ITEM_TYPE, 4);
                            SetCtrlAttribute (panelHandle,
                                              PANEL_ITEM_VALUE_STRING,
                                              ATTR_VISIBLE, 1);
                            SetCtrlAttribute (panelHandle,
                                              PANEL_ITEM_VALUE_NUMERIC,
                                              ATTR_VISIBLE, 0);
                            SetCtrlVal (panelHandle, PANEL_ITEM_VALUE_STRING,
                                        stringValue);
                            }
                        else
                            MessagePopup ("Inifile",
                                          "Error retrieving Inifile value.");
                        }
                    }    
                }        
            }
        }
    
    /* Set Dimming of Controls */
    SetCtrlAttribute (panelHandle, PANEL_NEW_SECTION, ATTR_DIMMED,
                      (!g_myInifile));
    SetCtrlAttribute (panelHandle, PANEL_DELETE_SECTION, ATTR_DIMMED,
                      (!g_myInifile) || (!sections));
    SetCtrlAttribute (panelHandle, PANEL_SECTION, ATTR_DIMMED,
                      (!g_myInifile) || (!sections));
    SetCtrlAttribute (panelHandle, PANEL_SECTION_NAME, ATTR_DIMMED,
                      (!g_myInifile) || (!sections));
    SetCtrlAttribute (panelHandle, PANEL_TOTAL_ITEMS, ATTR_DIMMED,
                      (!g_myInifile) || (!sections));
    SetCtrlAttribute (panelHandle, PANEL_NEW_ITEM, ATTR_DIMMED,
                      (!g_myInifile) || (!sections));
    SetCtrlAttribute (panelHandle, PANEL_DELETE_ITEM, ATTR_DIMMED,
                      (!g_myInifile) || (!sections) || (!items));
    SetCtrlAttribute (panelHandle, PANEL_ITEM, ATTR_DIMMED,
                      (!g_myInifile) || (!sections) || (!items));
    SetCtrlAttribute (panelHandle, PANEL_ITEM_NAME, ATTR_DIMMED,
                      (!g_myInifile) || (!sections) || (!items));
    SetCtrlAttribute (panelHandle, PANEL_ITEM_TYPE, ATTR_DIMMED,
                      (!g_myInifile) || (!sections) || (!items));
    SetCtrlAttribute (panelHandle, PANEL_ITEM_VALUE_STRING , ATTR_DIMMED,
                      (!g_myInifile) || (!sections) || (!items));
    SetCtrlAttribute (panelHandle, PANEL_ITEM_VALUE_NUMERIC, ATTR_DIMMED, 
                      (!g_myInifile) || (!sections) || (!items));
    SetCtrlAttribute (panelHandle, PANEL_TOTAL_SECTIONS, ATTR_DIMMED,
                      !g_myInifile);
    SetCtrlAttribute (panelHandle, PANEL_TEXTMSG_VALUE, ATTR_DIMMED,
                      (!g_myInifile) || (!sections) || (!items));
    return 0;
}

/*---------------------------------------------------------------------------*/
/* Create a new section in the INI object.                                   */
/*---------------------------------------------------------------------------*/
int CVICALLBACK NewSection (int panel, int control, int event,
                            void *callbackData, int eventData1,
                            int eventData2)
{
    int  section;
    int  sections;
    int  found;
    char *sectionName;
    char userSectionName[MAX_NAME_SIZE];

    switch (event)
        {
        case EVENT_COMMIT:
            userSectionName[0] = 0;
            if ((GenericMessagePopup ("New Section",
                                      "Please specify name of new section",
                                      "OK", "Cancel", "", userSectionName,
                                      MAX_NAME_SIZE-1, 0, 
                                      VAL_GENERIC_POPUP_INPUT_STRING,
                                      VAL_GENERIC_POPUP_BTN1,
                                      VAL_GENERIC_POPUP_BTN2)
                == VAL_GENERIC_POPUP_BTN1) && (userSectionName[0] != 0))
                {   
                if (Ini_SectionExists (g_myInifile, userSectionName))
                    MessagePopup("Inifile","Error, section already exists");
                else 
                    {
                    
                    /* We have to add a dummy item and then remove to create */
                    /* a new section */
                    Ini_PutString (g_myInifile, userSectionName,
                                   "Dummy_tag_name", "");
                    Ini_RemoveItem (g_myInifile, userSectionName,
                                    "Dummy_tag_name");
                    g_changesMade = 1;
                    }    
                sections = Ini_NumberOfSections (g_myInifile);
                found = 0;
                for (section = 1; (section <= sections) && (!found); section++)
                    {
                    if ((Ini_NthSectionName (g_myInifile, section,
                                             &sectionName)
                        >0) && (!strcmp(sectionName, userSectionName))) 
                        found = section;
                    }            
                if (found) 
                    {
                    section = found;
                    sections = Ini_NumberOfSections (g_myInifile);
                    SetCtrlAttribute (panel, PANEL_SECTION, ATTR_MAX_VALUE,
                                      sections);
                    SetCtrlVal (panel, PANEL_SECTION, section);
                    UpdateUIR (panel);
                    }
                }    
            break;
        }
    return 0;
}

/*--------------------------------------------------------------------------*/
/* Delete a Section from the INI object.                                    */
/*--------------------------------------------------------------------------*/
int CVICALLBACK DeleteSection (int panel, int control, int event,
                               void *callbackData, int eventData1,
                               int eventData2)
{
    char sectionName[MAX_NAME_SIZE];
    
    switch (event)
        {
        case EVENT_COMMIT:
            sectionName[0] = 0;
            GetCtrlVal (panel, PANEL_SECTION_NAME, sectionName);
            if (!Ini_RemoveSection (g_myInifile, sectionName))
                MessagePopup("Inifile","Error removing item from section");
            UpdateUIR(panel);
            g_changesMade = 1;
            break;
        }
    return 0;
}

/*--------------------------------------------------------------------------*/
/* Change which Section is currently displayed.                             */
/*--------------------------------------------------------------------------*/
int CVICALLBACK ChangeCurrentSection (int panel, int control, int event,
        void *callbackData, int eventData1, int eventData2)
{
    if (event == EVENT_COMMIT)
        UpdateUIR (panel);
    return 0;
}

/*--------------------------------------------------------------------------*/
/* Create a new Item in the INI object.                                     */
/*--------------------------------------------------------------------------*/
int CVICALLBACK NewItem (int panel, int control, int event,
                         void *callbackData, int eventData1, int eventData2)
{
    int  item;
    int  items;
    int  found;
    char *itemName;
    char sectionName[MAX_NAME_SIZE];
    char userItemName[MAX_NAME_SIZE];
    
    switch (event) 
        {
        case EVENT_COMMIT:
            userItemName[0] = 0;
            if ((GenericMessagePopup ("New Item",
                                      "Please specify name of new item",
                                      "OK", "Cancel", "", userItemName,
                                      MAX_NAME_SIZE-1, 0,
                                      VAL_GENERIC_POPUP_INPUT_STRING,
                                      VAL_GENERIC_POPUP_BTN1,
                                      VAL_GENERIC_POPUP_BTN2)
                == VAL_GENERIC_POPUP_BTN1) && (userItemName[0] != 0))
                {   
                GetCtrlVal (panel, PANEL_SECTION_NAME, sectionName);
                if (Ini_ItemExists (g_myInifile, sectionName, userItemName))
                    {
                    MessagePopup ("Inifile", "Error, item already exists");
                    goto Error;
                    }
                Ini_PutString (g_myInifile, sectionName, userItemName, "");
                g_changesMade = 1;
                items = Ini_NumberOfItems (g_myInifile, sectionName);
                found = 0;
                for (item = 1; (item <= items) && (!found); item++)
                    {
                    if ((Ini_NthItemName (g_myInifile, sectionName, item,
                                          &itemName)
                        > 0) && (!strcmp (itemName, userItemName))) 
                        found = item;
                    }            
                if (found) 
                    {
                    item = found;
                    items = Ini_NumberOfItems (g_myInifile, sectionName);
                    SetCtrlAttribute (panel, PANEL_ITEM, ATTR_MAX_VALUE,
                                      items);
                    SetCtrlVal (panel, PANEL_ITEM, item);
                    UpdateUIR (panel);
                    }
                }    
            break;
        }

Error:
    return 0;
}

/*--------------------------------------------------------------------------*/
/* Delete an Item from the INI object.                                      */
/*--------------------------------------------------------------------------*/
int CVICALLBACK DeleteItem (int panel, int control, int event,
                            void *callbackData, int eventData1,
                            int eventData2)
{
    char sectionName[MAX_NAME_SIZE];
    char itemName[MAX_NAME_SIZE];
    
    switch (event)
        {
        case EVENT_COMMIT:
            sectionName[0] = 0;
            itemName[0] = 0;
            GetCtrlVal (panel, PANEL_SECTION_NAME, sectionName);
            GetCtrlVal (panel, PANEL_ITEM_NAME, itemName);
            if (!Ini_RemoveItem (g_myInifile, sectionName, itemName))
                MessagePopup("Inifile", "Error removing item from section");
            UpdateUIR (panel);
            g_changesMade = 1;
            break;
        }
    return 0;
}

/*--------------------------------------------------------------------------*/
/* ChangeCurrentItem                                                        */
/*--------------------------------------------------------------------------*/
int CVICALLBACK ChangeCurrentItem (int panel, int control, int event,
        void *callbackData, int eventData1, int eventData2)
{
    switch (event) {
        case EVENT_COMMIT:
            UpdateUIR (panel);
            break;
    }
    return 0;
}

/*--------------------------------------------------------------------------*/
/* QuitCallback                                                             */
/*--------------------------------------------------------------------------*/
int CVICALLBACK QuitCallback (int panel, int control, int event,
        void *callbackData, int eventData1, int eventData2)
{
    switch (event) {
        case EVENT_COMMIT:
            QuitUserInterface (0);
            break;
    }
    return 0;
}