The key to making a pallet program is the policyicon control in.
In this example, the maximize and minimize buttons are hidden. The close button becomes hidden. Double-click the tray icon to display the main form. Right-click the pop-up menu.
1,
Drag policyicon1 in the C # interface, set relevant attributes (I am a beginner), or write in the code
Three balloon * attributes are the icons, content, and title of the tray bubble (for example, the formclosing event below)
The contextmenustrip attribute is the pop-up window associated with the right-click tray icon to be used below
The icon attribute adds an icon to the tray.
The text attribute is the prompt message when the mouse stays on the tray icon.
2,
Drag a contextmenustrip1 in the interface and add "" and "exit"
All code:
Using system;
Using system. Collections. Generic;
Using system. componentmodel;
Using system. Data;
Using system. drawing;
Using system. LINQ;
Using system. text;
Using system. Windows. forms;
Namespace Test
{
Public partial class form16 Tray: Form
{
Public form16 tray ()
{
Initializecomponent ();
}
Private void form16 tray _ load (Object sender, eventargs E)
{
// This. windowstate = system. Windows. Forms. formwindowstate. minimized;
This. maximizebox = false;
This. minimizebox = false;
}
Private void tooltoolstripmenuitem_click (Object sender, eventargs E)
{
// This. windowstate = system. Windows. Forms. formwindowstate. normal;
This. Show ();
}
Private void exit toolstripmenuitem_click (Object sender, eventargs E)
{
Yyicon1.dispose (); // release the tray Resource
Application. Exit (); // release all resources
}
Private void form16 tray _ formclosing (Object sender, formclosingeventargs E)
{
If (E. closereason = closereason. userclosing)
{
E. Cancel = true;
This. Hide ();
Policyicon1.balloontiptitle = "title ";
Policyicon1.balloontiptext = "the program is still running..." + "\ r \ n" + "click the tray icon to restore the window .";
Notifyicon1.showballoontip (2000 );
}
}
Private void policyicon#doubleclick (Object sender, eventargs E)
{
This. Show ();
}
}
}
Reprinted E. closereason attributes
If (E. closereason! = System. Windows. Forms. closereason. windowsshutdown)
{
E. Cancel = true;
This. windowstate = system. Windows. Forms. formwindowstate. minimized;
}
E. closereason attribute, whose value is of the closereason Enumeration type
Member Name Description
Applicationexitcall The exit method of the application class is called.
Formownerclosing The owner form is being closed.
Mdiformclosing The parent form of this multi-Document Interface (MDI) form is being closed.
None The reason for closing is undefined or cannot be determined.
Taskmanagerclosing Microsoft Windows
The task manager is shutting down the application.
Userclosing The user is closing the form through the user interface (UI). For example, by clicking the close button in the form window, you can select the close button in the window control menu, you can also disable the function by pressing Alt + F4.
Windowsshutdown The operating system is shutting down all applications to prepare for shutdown.