effects.bas

一个用vb和usb通信的一个实例,大家可以下载看看!

Attribute VB_Name = "modExplode"
Option Explicit

Type RECT
    Left As Long
    Top As Long
    Right As Long
    Bottom As Long
End Type

Declare Function GetWindowRect Lib "user32" (ByVal hwnd As Long, lpRect As RECT) As Long
Declare Function GetDC Lib "user32" (ByVal hwnd As Long) As Long
Declare Function ReleaseDC Lib "user32" (ByVal hwnd As Long, ByVal hdc As Long) As Long
Declare Function SetBkColor Lib "gdi32" (ByVal hdc As Long, ByVal crColor As Long) As Long
Declare Function Rectangle Lib "gdi32" (ByVal hdc As Long, ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long) As Long
Declare Function CreateSolidBrush Lib "gdi32" (ByVal crColor As Long) As Long
Declare Function SelectObject Lib "user32" (ByVal hdc As Long, ByVal hObject As Long) As Long
Declare Function DeleteObject Lib "gdi32" (ByVal hObject As Long) As Long
'动态打开窗体
Sub ExplodeForm(f As Form, Movement As Integer)
    Dim myRect As RECT
    Dim formWidth%, formHeight%, i%, X%, Y%, Cx%, Cy%
    Dim TheScreen As Long
    Dim Brush As Long
    GetWindowRect f.hwnd, myRect
    formWidth = (myRect.Right - myRect.Left)
    formHeight = myRect.Bottom - myRect.Top
    TheScreen = GetDC(0)
    Brush = CreateSolidBrush(f.BackColor)
    For i = 1 To Movement
        Cx = formWidth * (i / Movement)
        Cy = formHeight * (i / Movement)
        X = myRect.Left + (formWidth - Cx) / 2
        Y = myRect.Top + (formHeight - Cy) / 2
        Rectangle TheScreen, X, Y, X + Cx, Y + Cy
    Next i
    X = ReleaseDC(0, TheScreen)
    DeleteObject (Brush)
    
End Sub
'动态关闭窗体
Public Sub ImplodeForm(f As Form, Direction As Integer, Movement As Integer, ModalState As Integer)
    Dim myRect As RECT
    Dim formWidth%, formHeight%, i%, X%, Y%, Cx%, Cy%
    Dim TheScreen As Long
    Dim Brush As Long
    GetWindowRect f.hwnd, myRect
    formWidth = (myRect.Right - myRect.Left)
    formHeight = myRect.Bottom - myRect.Top
    TheScreen = GetDC(0)
    Brush = CreateSolidBrush(f.BackColor)
    For i = Movement To 1 Step -1
        Cx = formWidth * (i / Movement)
        Cy = formHeight * (i / Movement)
        X = myRect.Left + (formWidth - Cx) / 2
        Y = myRect.Top + (formHeight - Cy) / 2
        Rectangle TheScreen, X, Y, X + Cx, Y + Cy
    Next i
    X = ReleaseDC(0, TheScreen)
    DeleteObject (Brush)
End Sub