C#实现窗体几种淡入淡出效果的方法

C#实现窗体几种淡入淡出效果的方法

1.
private void Form1_Load(object sender, System.EventArgs e)
for(double d=0.01; d< 1; d+=0.02) { System.Threading.Thread.Sleep(1); Application.DoEvents(); this.Opacity=d; this.Refresh(); } 2. private void timer1_Tick(object sender, System.EventArgs e) { this.Opacity = WinShow ; WinShow += 0.1 ; if(WinShow >=1 )
{
timer1.Dispose ();
}
}
3.
用循环或计时器，

frmForm myForm=new frmForm()
frmForm.Opacity=0;
frmForm.show();
for(int i=0;i<100;i++)
{
Application.DoEvents()
frmForm.Opacity=i/100;
}

4.

#region ******** 窗体淡入效果函数 ********
private double WinShow = 0;//用于窗口淡入效果的变量
private void FormShow(System.Windows.Forms.Form Curfrm)
{
Curfrm.Opacity = WinShow ;
WinShow += 0.01;
if(WinShow == 1)
{
Curfrm.timerShow.Stop ();
}
}

#endregion
#region ******** 窗体淡入效果函数调用示例 ********
//实现窗口的淡入效果
private void timerShow_Tick(object sender, System.EventArgs e)
{
//timerShow，这是一个timer控件名称；把timerShow.interval=100就可以了。
FormShow(this);
}
#endregion

5.

using System.Runtime.InteropServices;

public class Win32
{
public const Int32 AW_HOR_POSITIVE = 0x00000001; // 从左到右打开窗口
public const Int32 AW_HOR_NEGATIVE = 0x00000002; // 从右到左打开窗口
public const Int32 AW_VER_POSITIVE = 0x00000004; // 从上到下打开窗口
public const Int32 AW_VER_NEGATIVE = 0x00000008; // 从下到上打开窗口
public const Int32 AW_CENTER = 0x00000010;
public const Int32 AW_HIDE = 0x00010000; // 在窗体卸载时若想使用本函数就得加上此常量
public const Int32 AW_ACTIVATE = 0x00020000; //在窗体通过本函数打开后，默认情况下会失去焦点，除非加上本常量
public const Int32 AW_SLIDE = 0x00040000;
public const Int32 AW_BLEND = 0x00080000; // 淡入淡出效果
[DllImport("user32.dll", CharSet = CharSet.Auto)]
public static extern bool AnimateWindow(
IntPtr hwnd, // handle to window
int dwTime, // duration of animation
int dwFlags // animation type
);
}


/*淡入窗体*/

private void Form_Load(object sender, EventArgs e)
{
Win32.AnimateWindow(this.Handle, 2000, Win32.AW_BLEND);
}

/*淡出窗体*/


private void Form_FormClosing(object sender, FormClosingEventArgs e)
{
Win32.AnimateWindow(this.Handle, 2000, Win32.AW_SLIDE | Win32.AW_HIDE | Win32.AW_BLEND);
}