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Software Technology Tips

The AnimateWindow API enables users to produce special effects like rolling, sliding, fading when loading or closing windows.

Parameters

hwnd

Handle to the window to animate.

dwTime

Specifies how long it takes to play the animation, in milliseconds.

dwFlags

Animation type.

1- Animate the window from left to right

2 -Animate the window from right to left

4 -Animate the window from top to bottom

8 -Animate the window from bottom to top

65536 -Hides the window

131072 - Activates the window

262144 -Slide animation

524288 - Fade effect

Code Samples

C#.Net

using Microsoft.Win32;

using System.Runtime.InteropServices;

const int AW_HOR_POSITIVE = 1;

const int AW_HOR_NEGATIVE = 2;

const int AW_VER_POSITIVE = 4;

const int AW_VER_NEGATIVE = 8;

const int AW_HIDE = 65536;

const int AW_ACTIVATE = 131072;

const int AW_SLIDE = 262144;

const int AW_BLEND = 524288;

[DllImport("user32", CharSet = CharSet.Auto)]

private static extern int AnimateWindow(IntPtr hwnd, int dwTime, int dwFlags);

private void Form1_Load(object sender, EventArgs e)

{

AnimateWindow(Handle, 500, AW_BLEND | AW_ACTIVATE);

}

VB.Net

Imports Microsoft.Win32

Private Const AW_HOR_POSITIVE = 1

Private Const AW_HOR_NEGATIVE = 2

Private Const AW_VER_POSITIVE = 4

Private Const AW_VER_NEGATIVE = 8

Private Const AW_HIDE = 65536

Private Const AW_ACTIVATE = 131072

Private Const AW_SLIDE = 262144

Private Const AW_BLEND = 524288

Private Declare Function AnimateWindow Lib "user32" (ByVal hwnd As Integer, ByVal dwtime As Integer, ByVal dwflags As Integer) As Boolean

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

AnimateWindow(Handle, 500, &H80000 Or &H20000)

End Sub

Related Tags:
VB.NET

Author: Pradip Shukla

VB.NET

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