form1.frm

来自「很好的教程原代码！」· FRM 代码 · 共 79 行

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   3195
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   4680
   LinkTopic       =   "Form1"
   ScaleHeight     =   3195
   ScaleWidth      =   4680
   StartUpPosition =   3  '窗口缺省
   Begin VB.TextBox Text1 
      Height          =   1935
      Left            =   120
      TabIndex        =   1
      Text            =   "Text1"
      Top             =   360
      Width           =   4335
   End
   Begin VB.CommandButton Command1 
      Caption         =   "改变控件尺寸"
      Height          =   495
      Left            =   1560
      TabIndex        =   0
      Top             =   2520
      Width           =   1335
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
'API函数声明
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 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
'使用常量声明
Const SWP_NOSIZE = &H1
Const SWP_NOZORDER = &H4
Const SWP_NOMOVE = &H2
Const SWP_DRAWFRAME = &H20
Const GWL_STYLE = (-16)
Const WS_THICKFRAME = &H40000
'
'按钮单击，使文本框可以自由改变大小
Private Sub Command1_Click()
    Resize Text1, Form1
End Sub
'
'使控件大小可以自由改变的函数
'第一个参数为要作用的控件
'第二个参数为控件所在的窗体
Sub Resize(ControlName As Control, FormName As Form)
    Dim NewStyle As Long
    NewStyle = GetWindowLong(ControlName.hwnd, GWL_STYLE)
    NewStyle = NewStyle Or WS_THICKFRAME
    NewStyle = SetWindowLong(ControlName.hwnd, GWL_STYLE, NewStyle)
    SetWindowPos ControlName.hwnd, FormName.hwnd, 0, 0, 0, 0, SWP_NOZORDER _
Or SWP_NOSIZE Or SWP_NOMOVE Or SWP_DRAWFRAME
End Sub