【VB】窗体透明二:窗体逐渐变透明(包括控件)
发布时间:2020-12-17 07:41:25 所属栏目:百科 来源:网络整理
导读:'添加一个 shape '添加一个PicturebBox,依它为容器添加一个shape,背景色设为蓝色 '添加一个时钟控件 Private Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongA" (ByVal hwnd As Long,ByVal nIndex As Long) As LongPrivate Declare Fun
'添加一个shape '添加一个PicturebBox,依它为容器添加一个shape,背景色设为蓝色 '添加一个时钟控件
Private Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongA" (ByVal hwnd As Long,ByVal nIndex As Long) As Long Private Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hwnd As Long,ByVal nIndex As Long,ByVal dwNewLong As Long) As Long Private Declare Function SetLayeredWindowAttributes Lib "user32" (ByVal hwnd As Long,ByVal crKey As Long,ByVal bAlpha As Byte,ByVal dwFlags As Long) As Long Const WS_EX_LAYERED = &H80000 Const GWL_EXSTYLE = (-20) Const LWA_ALPHA = &H2 Const LWA_COLORKEY = &H1 Dim tmd As Long Private Sub Form_Load() Show Shape1.BackColor = &H80000002 Shape1.BackStyle = 1 tmd = 255 Timer1.Interval = 50 Shape1.Width = Picture1.Width SetWindowLong hwnd,GWL_EXSTYLE,WS_EX_LAYERED SetLayeredWindowAttributes hwnd,tmd,LWA_ALPHA '越少越透明,限制0-255 End Sub Private Sub Timer1_Timer() On Error Resume Next tmd = tmd - 1 SetLayeredWindowAttributes hwnd,LWA_ALPHA Shape1.Width = Shape1.Width - Picture1.Width / 255 If tmd < 0 Then Timer1.Enabled = False MsgBox "OK!" End If End Sub (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |