Recommended class:
1, start the screen class:
Public Class Splashform: System.Windows.Forms.form
{
Private system.windows.Forms.PictureBox PictureBox1;
Private system.windows.Forms.Label label1;
Private system.windows.forms.label lbl_version;
///
/// The required designer variable.
///
Private system.componentmodel.Container Components = NULL;
Public Splashform ()
{
//
// Windows Form Designer Support
//
InitializationComponent ();
LBL_VERSION.TEXT = "Version:" Application.ProductVersion;
//
// Todo: Add any constructor code after INITIALIZECOMPONENT call
//
}
// 省 省 省
2, the application load class:
Using system;
Using system.drawing;
Using system.collections;
Using system.componentmodel;
Using system.windows.forms;
Using system.data;
Using system.Runtime.InteropServices;
Using system.diagnostics;
Using system.reflection;
Using system.io;
Namespace heroic.tempanalyse.tempgui
{
///
/// AppLoader's summary description.
///
Public Class Aploader
{
Private static applicationContext context;
Private static splashform sform = new splashform ();
Private static mainwindow mform = NULL;
// 0 No visible but still run, 1 home, 2 minimize, 3 maximize
Private const Int ws_shownormal = 3;
[Stathread]
Static void
Main
(String [] ARGS)
{
//
8/12/2004
] Used to update the program.
Doupdata ();
//
7/19/2004
] Change the order, the purpose makes it possible to speed up the loading speed
// Get running routines
Process Instance = RunningInstance ();
IF (instance == null)
{
Sform.show ();
MFORM = new mainwindow ();
Context = new applibilityContext ();
Application.idle = New EventHandler (onappidle);
Application.run (context);
}
Else
{
// Processing the discovery routine
HandlerunningInstance (Instance);
//MessageBox.show ("The current program has been run!");
}
}
/ / Update online, no longer scope
Private static void doupdata () {
System.Diagnostics.Process.Start (Application.Startuppath @ "/ update.exe", Application.startuppath @ "/ HEROIC.TEMPANALSE.TEMPGUI.EXE 0"); ////
}
Private Static Void onappidle (Object Sender, Eventargs E)
{
IF (context.mainform == null)
{
Application.idle - = New EventHandler (onappidle);
mform.preload ();
CONTEXT.MAINFORM = MFORM;
CONTEXT.MAINFORM.SHOW ();
Sform.close ();
Sform = NULL;
}
}
// Do not allow two programs to start at the same time
Public Static Process RunningInstance ()
{
Process Current = process.getcurrentProcess ();
Process [] processes = process.getProcesSbyName (current.ProcessName);
// Traverse the routine that is running with the same name
Foreach (Process Process In Processes)
{
/ / Ignore the existing routine
IF (Process.id! = Current.ID)
{
/ / Make sure the routine runs from the EXE file
IF (assembly.getexecutingassembly (). location.replace ("/", "//") ==
Current.mainmodule.FileName)
{
/ / Return another routine instance
Return Process;
}
}
}
/ / There is no other routine, return NULL
Return NULL;
}
Public Static Void HandlerunningInstance (Process Instance)
{
/ / Make sure the window is not minimized or maximized
ShowWindowasync (Instance.mainWindowHandle, WS_Shownormal);
/ / Set the real routine for Foreground Window
SetForegroundWindow (Instance.MainWindowHandle);
}
[DLLIMPORT ("User32.dll")]]]]]
Private static Extern Bool ShowWindowasync (
INTPTR HWND, INT CMDSHOW);
[DLLIMPORT ("User32.dll")] Private Static Extern Bool
SetForegroundwindow (INTPTR HWND);
}
}
3, the class after loading is officially running:
Public void preload ()
{
// If you have already loaded, return
IF (_Loaded)
Return;
// put the code generated by the machine here
INITCUSTOMCONTROL ();
_Loaded = true;
}
/ / Whether it is loaded
Private bool _loaded = false;
Protected Override Void OnLoad (Eventargs E)
{
/ / Make sure the preload () function has been called
IF (! _loaded)
Throw New InvalidOperationException ("Must Call Prelioad Before Calling this function.");
