form1.frm

vb得100个编程实例

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.PictureBox Picture1 
      Height          =   2775
      Left            =   240
      ScaleHeight     =   2715
      ScaleWidth      =   2235
      TabIndex        =   0
      Top             =   120
      Width           =   2295
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Const SWP_NOSIZE = &H1
Const SWP_NOMOVE = &H2
Const HWND_TOPMOST = -1
Const SWP_SHOWWINDOW = &H40
Const strWebSite = "你拖放的是网页地址,地址是"
Const strWebImage = "你拖放的是网页图象,图象将保存到PictureBox中"
     
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 Sub Form_Load()
    '使Form1可以接受OLE拖放
    Form1.OLEDropMode = 1
    ' 使用Windows API函数SetWindowPos将窗口设置为总在最前面以捕捉拖放操作
    SetWindowPos Me.hwnd, HWND_TOPMOST, 0, 0, 0, 0, _
                SWP_NOMOVE Or SWP_NOSIZE Or SWP_SHOWWINDOW
End Sub

Private Sub Form_OLEDragDrop(Data As DataObject, Effect As Long, Button _
        As Integer, Shift As Integer, X As Single, Y As Single)
On Error Resume Next
    Effect = vbDropEffectCopy
    If Data.GetFormat(vbCFText) Then        '拖放的是网页地址
        MsgBox strWebSite + Data.GetData(vbCFText)
    ElseIf Data.GetFormat(vbCFDIB) Then     '拖放的是网页图象
        MsgBox strWebImage
        Picture1.Picture = Data.GetData(vbCFDIB)
    End If
End Sub