建立程序托盘图标

1.定义消息
在头文件里定义
#define WM_MY_LBUTTONDOWN WM_USER+123

afx_msg LRESULT OnMyButtonDown(WPARAM wParam, LPARAM lParam);

2.cpp里

ON_MESSAGE(WM_MY_LBUTTONDOWN, OnMyButtonDown)

3.初始化里：
NOTIFYICONDATA tnd;
tnd.cbSize=sizeof(NOTIFYICONDATA);
tnd.hWnd=this->m_hWnd;
tnd.uID=IDI_ICON2;
tnd.uFlags=NIF_MESSAGE|NIF_ICON|NIF_TIP;
tnd.uCallbackMessage=WM_MY_LBUTTONDOWN;
tnd.hIcon=LoadIcon(AfxGetInstanceHandle(),MAKEINTRESOURCE(IDI_ICON2));
Shell_NotifyIcon(NIM_ADD,&tnd);
4.消息函数

LRESULT CImageViewerDlg::OnMyButtonDown(WPARAM wParam, LPARAM lParam)
{
UINT IDu;
UINT MouseMsgU;
POINT Pt;
IDu=(UINT)wParam;
MouseMsgU=(UINT)lParam;
if(MouseMsgU==WM_LBUTTONDOWN)
{
switch(IDu)
{
case IDI_ICON2:
GetCursorPos(&Pt);
// CImageViewerDlg mos;
// mos.DoModal();
break;
}
}

if(MouseMsgU==WM_RBUTTONDOWN)
{
switch(IDu)
{
case IDI_ICON2:
GetCursorPos(&Pt);
AfxGetApp()->m_pMainWnd->ShowWindow(SW_SHOWNORMAL);
break;
}
}

return 0;
}