zoukankan      html  css  js  c++  java
  • vb将窗体中的控件或某种颜色透明

    Option Explicit
    ' ******************** 窗体透明 ********************
    '***Module.bas
    '****
    Public Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long) As Long
    Public Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
    Public Declare Function SetLayeredWindowAttributes Lib "user32" (ByVal hwnd As Long, ByVal crKey As Long, ByVal bAlpha As Byte, ByVal dwFlags As Long) As Long
    
    Public Const WS_EX_LAYERED = &H80000
    Public Const GWL_EXSTYLE = (-20)
    Public Const LWA_ALPHA = &H2
    Public Const LWA_COLORKEY = &H1
    Public Const WS_EX_TRANSPARENT = &H20&
    
    '**************
    '***Form1.frm
    '-------------------------------------------------**
    Private Sub Form_Load()
        Dim rtn As Long
        rtn = GetWindowLong(hwnd, GWL_EXSTYLE)
    
        '全窗体  完全透明, 通透         全消失
    '    SetWindowLong hwnd, GWL_EXSTYLE, rtn Or WS_EX_LAYERED
    
        '    '将某个色彩 完全通透           部分消失
    '        lbl.BackColor = vbBlue                                      '设置一个色彩
    '        Form1.BackColor = vbBlue
    '        SetWindowLong hwnd, GWL_EXSTYLE, rtn Or WS_EX_LAYERED
    '        SetLayeredWindowAttributes hwnd, vbBlue, 0, LWA_COLORKEY
    
        '    '通透 ,  半透明
    '        SetWindowLong Me.hwnd, GWL_EXSTYLE, rtn Or WS_EX_LAYERED Or WS_EX_TRANSPARENT
    '        SetLayeredWindowAttributes Me.hwnd, 0, 128, LWA_ALPHA      ' The level of transparency (0 - 255)
    
        '不通透,    半透明
        SetWindowLong hwnd, GWL_EXSTYLE, rtn Or WS_EX_LAYERED
        SetLayeredWindowAttributes hwnd, 0, 200, LWA_ALPHA   '(句柄  ,掩码颜色[RGB]  ,  透明程度[0-255],  )
        'hwnd
        'crKey               为颜色值,// 掩码的颜色,可以用RGB(r,g,b)来指定
        'bAlpha          是透明度,取值范围是[0,255]
        'dwFlags     是透明方式,可以取两个值:
        '                =LWA_ALPHA时,crKey参数无效,bAlpha参数有效;
        '                =LWA_COLORKEY时,窗体中的所有颜色为crKey的地方将变为透明,bAlpha参数无效。
        '
    End Sub
    

    摘自QQ群

  • 相关阅读:
    Git 合并流程
    Layui父页面向子页面传参
    jsp页面包含的几中方式
    Eclipse项目启动不了
    jquery 用于操作动态元素的delegate/on方法
    JS[获取两个日期中所有的月份]
    Map的四种遍历方法
    MySQL中, 如何查询某一天, 某一月, 某一年的数据.
    myEclies项目导入Eclipse中常见问题
    MyEclipse背景与字体大小和xml文件中字体大小调整
  • 原文地址:https://www.cnblogs.com/garyxiao/p/3183322.html
Copyright © 2011-2022 走看看