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//
// AUTHOR
// N. Nielsen
//
// LICENSE
// This software is in the public domain.
//
// The software is provided "as is", without warranty of any kind,
// express or implied, including but not limited to the warranties
// of merchantability, fitness for a particular purpose, and
// noninfringement. In no event shall the author(s) be liable for any
// claim, damages, or other liability, whether in an action of
// contract, tort, or otherwise, arising from, out of, or in connection
// with the software or the use or other dealings in the software.
//
// SUPPORT
// Send bug reports to: <nielsen@memberwebs.com>
//
#ifndef __TRAYICON_H__
#define __TRAYICON_H__
#include "mystring.h"
////////////////////////////////////////////////////////////////
// CTrayIcon manages an icon in the Windows 95 system tray.
//
class CTrayIcon
{
public:
CTrayIcon(UINT uID, HINSTANCE hInst)
{
// Initialize NOTIFYICONDATA
memset(&m_nid, 0 , sizeof(m_nid));
m_nid.cbSize = sizeof(m_nid);
m_nid.uID = uID; // never changes after construction
m_uID = uID;
m_hInst = hInst;
m_bEnabled = true;
string sTip;
sTip.load_string(hInst, uID);
_tcsncpy(m_nid.szTip, sTip, 63);
m_nid.szTip[63] = 0;
}
~CTrayIcon()
{
SetIcon(0);
}
// Call this to receive tray notifications
void SetNotificationWnd(HWND hWndNotify, UINT uCbMsg)
{
ATLASSERT(hWndNotify == NULL || ::IsWindow(hWndNotify));
ATLASSERT(uCbMsg == 0 || uCbMsg >= WM_USER);
m_nid.hWnd = hWndNotify;
m_nid.uCallbackMessage = uCbMsg;
}
// SetIcon functions. To remove icon, call SetIcon(0)
// main variant you want to use
bool SetIcon(UINT uID)
{
string sTip;
sTip.load_string(_Module.m_hInst, uID);
return SetIcon(uID, sTip);
}
bool SetIcon(UINT uID, LPCSTR szTip)
{
HICON hicon = NULL;
if (uID)
{
hicon = (HICON)::LoadImage(_Module.m_hInst, MAKEINTRESOURCE(uID),
IMAGE_ICON, 16, 16, LR_SHARED);
m_uID = uID;
_tcsncpy(m_nid.szTip, szTip, 63);
m_nid.szTip[63] = 0;
}
return SetIcon(hicon, NULL);
}
//////////////////
// Common SetIcon for all overloads.
bool SetIcon(HICON hicon, LPCSTR lpTip)
{
UINT msg;
m_nid.uFlags = 0;
// Set the icon
if (hicon)
{
// Add or replace icon in system tray
msg = m_nid.hIcon ? NIM_MODIFY : NIM_ADD;
m_nid.hIcon = hicon;
m_nid.uFlags |= NIF_ICON;
}
else
{ // remove icon from tray
if (m_nid.hIcon == NULL)
return true; // already deleted
msg = NIM_DELETE;
}
// Use the tip, if any
if (lpTip)
strncpy(m_nid.szTip, lpTip, sizeof(m_nid.szTip));
if (m_nid.szTip[0])
m_nid.uFlags |= NIF_TIP;
// Use callback if any
if (m_nid.uCallbackMessage && m_nid.hWnd)
m_nid.uFlags |= NIF_MESSAGE;
// Do it
bool bRet = Shell_NotifyIcon(msg, &m_nid) ? true : false;
if (msg == NIM_DELETE || !bRet)
m_nid.hIcon = NULL; // failed
return bRet;
}
bool SetStandardIcon(LPCTSTR lpszIconName, LPCSTR lpTip)
{ return SetIcon(::LoadIcon(NULL, lpszIconName), lpTip); }
void Enable(bool bEnable = true)
{ m_bEnabled = bEnable; }
LRESULT OnTrayNotification(WPARAM wID, LPARAM lEvent)
{
if (!m_bEnabled || wID != m_nid.uID ||
(lEvent != WM_RBUTTONUP && lEvent != WM_LBUTTONDBLCLK))
return 0;
// If there's a resource menu with the same ID as the icon, use it as
// the right-button popup menu. CTrayIcon will interprets the first
// item in the menu as the default command for WM_LBUTTONDBLCLK
//
HMENU hMenu = ::LoadMenu(_Module.m_hInst, MAKEINTRESOURCE(m_uID));
if (!hMenu)
return 0;
HMENU hSubMenu = GetSubMenu(hMenu, 0);
if (!hSubMenu)
{
DestroyMenu(hMenu);
return 0;
}
if (lEvent==WM_RBUTTONUP)
{
// Make first menu item the default (bold font)
::SetMenuDefaultItem(hSubMenu, 0, TRUE);
// Display the menu at the current mouse location. There's a "bug"
// (Microsoft calls it a feature) in Windows 95 that requires calling
// SetForegroundWindow. To find out more, search for Q135788 in MSDN.
//
POINT ptMouse;
::GetCursorPos(&ptMouse);
::SetForegroundWindow(m_nid.hWnd);
::TrackPopupMenu(hSubMenu, 0, ptMouse.x, ptMouse.y, 0,
m_nid.hWnd, NULL);
}
else // double click: execute first menu item
::SendMessage(m_nid.hWnd, WM_COMMAND, ::GetMenuItemID(hSubMenu, 0), 0);
// TODO: Let's see if we need this
// DestroyMenu(hSubMenu);
return 1; // handled
}
protected:
NOTIFYICONDATA m_nid; // struct for Shell_NotifyIcon args
UINT m_uID;
HINSTANCE m_hInst;
bool m_bEnabled;
};
#endif //_TRAYICON_H_991016
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