Display system information
Example statement
In this example, we get information about the information, screens, and power supplies by using the SysInfo control. The program operation results are shown in Figure 97-1.
Technical point
l Use the sysinfo control
l Get the operating system version number, power attribute
Implementation process
■ New project
Open Visual Studio.net, select "New Project", select "Visual Basic Project" in the Project Type window, select "Windows Application" in the Template window, enter "SysInfo" in the Name Domain, and then select the save path. Click "Confirm".
■ Add control
Add ten Label controls to the form (you can arrange by menu "format").
■ Setting properties
Change the text attribute of the Label control of the left column to the interface.
■ Add code
Private Sub Form1_Load (Byval E AS System.Object, Byval E AS System.Eventargs) Handles MyBase.Load
'Get the operating system platform code, where 1 means 95/98, 2 represents NT / 2000 system
Select Case Sysinfo.osplatform
Case 1
Label2.text = "windows95 / 98"
Case 2
Label2.text = "WindowsNT / 2000"
End SELECT
'Get the operating system version number
Label4.text = sysinfo.OSversion & "." & Sysinfo.osbuild
'Get the size of the desktop size
Label6.text = sysinfo.workareaheight & "x" & sysinfo.workAreawidth
'Get the power status value, 1 represents the AC power, 0 represents the battery
Select Case Sysinfo.acstatus
Case 1
Label8.text = "AC power"
Case 0
Label8.text = "battery"
End SELECT
'Get the remaining time of the battery, when the battery is an AC power, return to -1, other return 255
Select Case Sysinfo.BatterylifeTime
Case -1
Label10.Text = "Unknown"
Case Else
Label10.text = sysinfo.batterylifetime
End SELECT
End Sub
■ Run the program
Click Menu "Debug | Start" or click
Icon running program.
summary
All attributes of the sysinfo control are read-only, so we can only read in the code. You can help us create a program similar to the Windows login program by using the SysInfo control. That is, when we change the system resolution or plug in or unplug a plug-and-play device, our program can respond. Operating system information, screen setting information, and power status information can be obtained by using the SYSINFO control. Among them, the size of the screen is not included in the WINDOWS taskbar.
