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http://www.codeguru....35/?thread=6517
Now the problem is: how can I execute a function from the system tray class sysTray inside the callback function of the window? The function sysTray.OnTrayNotification(wParam, lParam) should be executed when the message WM_ICONNOTIFY occurs (Line 143 in the code below). But when compiling, I get an error "error: `sysTray' was not declared in this scope".
here the main part of the program:
/**
This program demonstrates how to create a win32 GUI program
with a system tray icon. The project is created with Code::Blocks.
TODO:
allow only one instance
documentation:
[url="http://www.codeguru.com/cpp/com-tech/shell/icons/comments.php/c1335/?thread=6517"]http://www.codeguru.com/cpp/com-tech/shell...35/?thread=6517[/url]
[url="http://www.daniweb.com/blogs/entry3389.html"]http://www.daniweb.com/blogs/entry3389.html[/url]
[url="http://forum.pcmweb.nl/archive/index.php/t-4733.html"]http://forum.pcmweb.nl/archive/index.php/t-4733.html[/url]
*/
#include <windows.h>
#include "SystemTray.h"
#include "resource.h"
#define WM_ICONNOTIFY (WM_USER + 101) // notification for the systemtray icon
/* Declare Windows procedure */
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);
/* Make the class name into a global variable */
char szClassName[ ] = "CodeBlocksWindowsApp";
char szTitle[ ] = "Demo program with systray icon";
char szToolTip[ ] = "Demo program - System tray icon";
int WINAPI WinMain (HINSTANCE hThisInstance,
HINSTANCE hPrevInstance,
LPSTR lpszArgument,
int nCmdShow)
{
HWND hwnd; /* This is the handle for our window */
MSG messages; /* Here messages to the application are saved */
WNDCLASSEX wincl; /* Data structure for the windowclass */
/* The Window structure */
wincl.hInstance = hThisInstance;
wincl.lpszClassName = szClassName;
wincl.lpfnWndProc = WindowProcedure; /* This function is called by windows */
wincl.style = CS_DBLCLKS; /* Catch double-clicks */
wincl.cbSize = sizeof (WNDCLASSEX);
/* Use default icon and mouse-pointer */
wincl.hIcon = LoadIcon(wincl.hInstance, MAKEINTRESOURCE(APPLICATION_ICON));
wincl.hIconSm = LoadIcon (wincl.hInstance, MAKEINTRESOURCE(APPLICATION_ICON));
wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
wincl.lpszMenuName = NULL; /* No menu */
wincl.cbClsExtra = 0; /* No extra bytes after the window class */
wincl.cbWndExtra = 0; /* structure or the window instance */
/* Use Windows's default colour as the background of the window */
wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;
/* Register the window class, and if it fails quit the program */
if (!RegisterClassEx (&wincl))
return 0;
/* The class is registered, let's create the program*/
hwnd = CreateWindowEx (
0, /* Extended possibilites for variation */
szClassName, /* Classname */
szTitle, /* Title Text */
WS_OVERLAPPEDWINDOW, /* default window */
CW_USEDEFAULT, /* Windows decides the position */
CW_USEDEFAULT, /* where the window ends up on the screen */
544, /* The programs width */
375, /* and height in pixels */
HWND_DESKTOP, /* The window is a child-window to desktop */
NULL, /* No menu */
hThisInstance, /* Program Instance handler */
NULL /* No Window Creation data */
);
/* Create a systray icon */
UINT uCallbackMessage = WM_ICONNOTIFY;
HICON icon = wincl.hIconSm;
CSystemTray sysTray = CSystemTray(hThisInstance, hwnd, uCallbackMessage, szToolTip, icon, 0);
sysTray.SetPopupMenuDefaultItem(IDM_LOGFILE, 0);
sysTray.SetPopupMenu(SYSTRAY_MENU);
/* Do NOT make the window visible on the screen */
ShowWindow (hwnd, nCmdShow);
//ShowWindow (hwnd, false);
/* Run the message loop. It will run until GetMessage() returns 0 */
while (GetMessage (&messages, NULL, 0, 0))
{
/* Translate virtual-key messages into character messages */
TranslateMessage(&messages);
/* Send message to WindowProcedure */
DispatchMessage(&messages);
}
/* The program return-value is 0 - The value that PostQuitMessage() gave */
return messages.wParam;
}
/* This function is called by the Windows function DispatchMessage() */
LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message) /* handle the messages */
{
case WM_DESTROY:
PostQuitMessage (0); /* send a WM_QUIT to the message queue */
break;
case WM_COMMAND:
// the wParam is the command message from the menu bar
// so we are going to process it.
switch ( wParam )
{
case IDM_LOGFILE:
MessageBox( hwnd , "From the Menu" , "IDM_LOGFILE" , MB_OK );
return 0;
case IDM_SETTINGS:
MessageBox ( hwnd , "From the Menu" , "IDM_SETTINGS" , MB_OK );
return 0;
case IDM_HELP:
MessageBox ( hwnd , "From the Menu" , "IDM_HELP" , MB_OK );
return 0;
case IDM_EXIT:
{
int res = MessageBox ( hwnd,
"Are you sure you want to exit the program?" ,
"Exit program",
MB_YESNOCANCEL | MB_ICONEXCLAMATION) ;
if (res == IDYES)
{
PostQuitMessage (0); /* send a WM_QUIT to the message queue */
}
}
return 0;
default:
MessageBox ( hwnd ,"Unknown menu item " , "Error" , MB_OK );
return 0;
}
case WM_ICONNOTIFY:
// the following line does not work:
return sysTray.OnTrayNotification(wParam, lParam);
default: /* for messages that we don't deal with */
return DefWindowProc (hwnd, message, wParam, lParam);
}
return 0;
}
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