Basic4android中使用透明按钮

#Region  Project Attributes 
	#ApplicationLabel: B4ATransparentButton
	#VersionCode: 1
	#VersionName: 
	‘SupportedOrientations possible values: unspecified, landscape or portrait.
	#SupportedOrientations: unspecified
	#CanInstallToExternalStorage: False
#End Region

#Region  Activity Attributes 
	#FullScreen: False
	#IncludeTitle: True
#End Region

Sub Process_Globals
	‘These global variables will be declared once when the application starts.
	‘These variables can be accessed from all modules.

End Sub

Sub Globals
	‘These global variables will be redeclared each time the activity is created.
	‘These variables can only be accessed from this module.

	Private Button1 As Button
	Dim cd As ColorDrawable 
	Dim bmp As Bitmap 
	
End Sub

Sub Activity_Create(FirstTime As Boolean)
	‘Do not forget to load the layout file created with the visual designer. For example:
	Activity.LoadLayout("1")
	bmp.Initialize(File.DirAssets,"1.jpg")
	Activity.SetBackgroundImage(bmp)
	cd.Initialize (Colors.ARGB (100,0,0,0),5)
	Button1.Initialize("Button1")
	Button1.Background =cd
	
		
End Sub

Sub Activity_Resume

End Sub

Sub Activity_Pause (UserClosed As Boolean)

End Sub