form1.frm

大量优秀的vb编程

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "保持窗体显示在最前面"
   ClientHeight    =   2124
   ClientLeft      =   48
   ClientTop       =   336
   ClientWidth     =   3468
   LinkTopic       =   "Form1"
   ScaleHeight     =   2124
   ScaleWidth      =   3468
   StartUpPosition =   3  'Windows Default
   Begin VB.CommandButton Command1 
      Caption         =   "显示在最前面"
      Height          =   492
      Left            =   1200
      TabIndex        =   0
      Top             =   840
      Width           =   1212
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit


Dim OnTop As Boolean


Private Declare Function SetWindowPos Lib "user32" (ByVal hwnd As Long, ByVal hWndInsertAfter As Long, ByVal x As Long, ByVal y As Long, ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long) As Long

' SetWindowPos Flags
Const SWP_NOSIZE = &H1
Const SWP_NOMOVE = &H2

' SetWindowPos() hwndInsertAfter values
Const HWND_TOPMOST = -1
Const HWND_NOTOPMOST = -2






Private Sub Command1_Click()
    OnTop = Not OnTop
    
    If OnTop Then
        Command1.Caption = "取消显示模式"
        SetWindowPos Me.hwnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOSIZE Or SWP_NOMOVE
        Form2.Show
    Else
        Command1.Caption = "显示在最前面"
        SetWindowPos Me.hwnd, HWND_NOTOPMOST, 0, 0, 0, 0, SWP_NOSIZE Or SWP_NOMOVE
    End If

   

End Sub