form1.frm

100个vb编程实例,什么都有

VERSION 5.00
Begin VB.Form Form1 
   BackColor       =   &H00C0C0C0&
   BorderStyle     =   4  'Fixed ToolWindow
   Caption         =   "Form1"
   ClientHeight    =   2355
   ClientLeft      =   45
   ClientTop       =   270
   ClientWidth     =   2790
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   157
   ScaleMode       =   3  'Pixel
   ScaleWidth      =   186
   ShowInTaskbar   =   0   'False
   StartUpPosition =   3  '窗口缺省
   Begin VB.Timer Timer1 
      Interval        =   10
      Left            =   0
      Top             =   0
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit

Private Type POINTAPI
x As Long
y As Long
End Type

Const Srccopy = &HCC0020
Const Swp_nomove = &H2
Const Swp_nosize = &H1
Const Flags = Swp_nomove Or Swp_nosize
Const hwnd_topmost = -1

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
Private Declare Function GetCursorPos Lib "user32" (lpPoint As POINTAPI) As Long
Private Declare Function GetDC Lib "user32" (ByVal hWnd As Long) As Long
Private Declare Function StretchBlt Lib "gdi32" (ByVal hdc As Long, ByVal x As Long, ByVal y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hSrcDC As Long, ByVal xSrc As Long, ByVal ySrc As Long, ByVal nSrcWidth As Long, ByVal nSrcHeight As Long, ByVal dwRop As Long) As Long
Dim pos As POINTAPI


Private Declare Function CreateEllipticRgn Lib "gdi32" (ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long) As Long
Private Declare Function SetWindowRgn Lib "user32" (ByVal hWnd As Long, ByVal hRgn As Long, ByVal bRedraw As Long) As Long


Private Sub Form_Load()
SetWindowPos hWnd, hwnd_topmost, 0, 0, 0, 0, Flags
Dim hr&, dl&
Dim usew&, useh&
usew& = Me.Width / Screen.TwipsPerPixelX
useh& = Me.Height / Screen.TwipsPerPixelY
hr& = CreateEllipticRgn(0, 0, usew, useh)
dl& = SetWindowRgn(Me.hWnd, hr, True)
End Sub
Private Sub start()
Dim sx As Integer
Dim sy As Integer
GetCursorPos pos
sx = IIf(pos.x < 50 Or pos.x > 590, IIf(pos.x < 50, 0, 540), pos.x - 50)
sy = IIf(pos.y < 50 Or pos.y > 430, IIf(pos.y < 50, 0, 380), pos.y - 50)
Caption = "    坐标" & sx & "," & sy & " 放大镜"
StretchBlt hdc, 0, 0, 200, 200, GetDC(0), sx, sy, 100, 100, Srccopy
End Sub

Private Sub Timer1_Timer()
start
End Sub



Private Sub Form_DblClick()
Unload Me
End Sub