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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 RegionSub Process_Globals	‘These global variables will be declared once when the application starts.	‘These variables can be accessed from all modules.End SubSub 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 SubSub 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 SubSub Activity_ResumeEnd SubSub Activity_Pause (UserClosed As Boolean)End Sub