trayicon.c

labwindow 编程的toolbox例程。

#include <userint.h>

/*---------------------------------------------------------------------------*/
/*                                                                           */
/* FILE:    trayicon.c                                                       */
/*                                                                           */
/* PURPOSE: This example illustrates how to use the WinTools instrument      */
/*          driver to install icons in the status area of the Windows shell  */
/*          taskbar, called the System Tray.  Your app can respond to events */
/*          on the icon via a simple callback mechanism.                     */
/*                                                                           */
/*---------------------------------------------------------------------------*/

/*---------------------------------------------------------------------------*/
/* Include files                                                             */
/*---------------------------------------------------------------------------*/
#include <ansi_c.h>
#include <cvirte.h>     
#include "trayicon.h"
#include "toolbox.h"

/*---------------------------------------------------------------------------*/
/* Module-globals                                                            */
/*---------------------------------------------------------------------------*/
static int g_panelHandle;

/*---------------------------------------------------------------------------*/
/* Internal function prototypes                                              */
/*---------------------------------------------------------------------------*/
int CVICALLBACK TaskbarIconCB (int iconHandle, int event, int eventData);

/*---------------------------------------------------------------------------*/
/* This is the application's entry-point.                                    */
/*---------------------------------------------------------------------------*/
int __stdcall WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
                       LPSTR lpszCmdLine, int nCmdShow)
{
    int trayIconHandle;
    int menuItemIndex;
        
    if (InitCVIRTE (hInstance, 0, 0) == 0)  
        return -1; 
    if ((g_panelHandle = LoadPanel (0, "trayicon.uir", PANEL)) < 0)
        {
        CloseCVIRTE ();
        return -1; 
        }
    SetPanelAttribute (g_panelHandle, ATTR_HAS_TASKBAR_BUTTON, 0);
    SetSystemAttribute (ATTR_TASKBAR_BUTTON_VISIBLE, 0);

    /* Add an icon to the taskbar System Tray */
    InstallSysTrayIcon ("cvi.ico", "CVI Tray Icon: Right-click for popup",
                        TaskbarIconCB, &trayIconHandle);
    
    /* Create a right-click menu for the icon and add some items to it */
    AttachTrayIconMenu (trayIconHandle);
    InsertTrayIconMenuItem (trayIconHandle, "Default Item", &menuItemIndex);
    InsertTrayIconMenuItem (trayIconHandle, "Dimmed Item", &menuItemIndex);
    InsertTrayIconMenuItem (trayIconHandle, 0, &menuItemIndex);
    InsertTrayIconMenuItem (trayIconHandle, "Checked Item", &menuItemIndex);
    
    /* Set some attributes of the menu */
    SetTrayIconMenuAttr (trayIconHandle, ATTR_POPUP_DEFAULT_ITEM, 1);
    SetTrayIconMenuItemAttr (trayIconHandle, 2, ATTR_DIMMED, 1);
    SetTrayIconMenuItemAttr (trayIconHandle, 4, ATTR_CHECKED, 1); 

    /* Display the panel and run the GUI -- the app must process events in   */
    /* order to receive messages from the tray icon.                         */
    DisplayPanel (g_panelHandle);
    RunUserInterface ();

    /* Discard the tray icon's menu and then the icon itself */
    DetachTrayIconMenu (trayIconHandle);
    RemoveSysTrayIcon (trayIconHandle);

    /* Clean up and return */
    DiscardPanel (g_panelHandle);
    CloseCVIRTE ();
    return 0;
}

/*---------------------------------------------------------------------------*/
/* This function responds to events from the system tray icon.  We will      */
/* simply look at the incoming event and display it in the TextBox on our    */
/* panel.                                                                    */ 
/*---------------------------------------------------------------------------*/
int CVICALLBACK TaskbarIconCB (int iconHandle, int event, int eventData)
{
    char eventName [70];
    
    switch (event)
        {
        case EVENT_LEFT_CLICK:
            strcpy (eventName, "Left button down\n");
            break;
        case EVENT_LEFT_MOUSE_UP:
            strcpy (eventName, "Left button up\n");
            break;
        case EVENT_RIGHT_CLICK:
            strcpy (eventName, "Right button down\n");
            break;
        case EVENT_RIGHT_MOUSE_UP:
            strcpy (eventName, "Right button up\n");
            break;
        case EVENT_LEFT_DOUBLE_CLICK:
            strcpy (eventName, "Left double-click\n");
            break;
        case EVENT_RIGHT_DOUBLE_CLICK:        
            strcpy (eventName, "Right double-click\n");
            break;
        case EVENT_MENU_ITEM:
            
            /* With menu events, eventData contains the selected item's ID */
            sprintf (eventName, "Menu item %d selected\n", eventData);
            break;
        default:
            eventName[0] = 0;
        }
    SetCtrlVal (g_panelHandle, PANEL_TEXTBOX, eventName);
    
    /* Honor our popup menu -- return non-zero to prevent it from appearing */
    return 0;
}

int CVICALLBACK PanelCB (int panel, int event, void *callbackData,
                         int eventData1, int eventData2)
{
    if (event == EVENT_CLOSE)
        QuitUserInterface (0);
    return 0;
}

    

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;
}