我现在有一个表单窗口应用程序我想在应用程序运行时更改form opacity
。表示在应用程序运行时它将显示low opacity
表单,随着时间的推移,它将显示带有100 opacity
的完整表单。那怎么做。 (我应该使用计时器控制来控制不透明度,如果是,那么如何????)
答案 0 :(得分:5)
在表单的构造函数中,你可以写这样的东西。
this.Opacity = .1;
timer.Interval = new TimeSpan(0, 0, intervalinminutes);
timer.Tick += ChangeOpacity;
timer.Start();
然后定义一个像这样的方法
void ChangeOpacity(object sender, EventArgs e)
{
this.Opacity += .10; //replace.10 with whatever you want
if(this.Opacity == 1)
timer.Stop();
}
答案 1 :(得分:3)
要淡入淡出表格,我通常会这样做:
for(double opacity = 0.0; opacity <= 1.0; opacity += 0.2) {
DateTime start = DateTime.Now;
this.Opacity = opacity;
while(DateTime.Now.Subtract(start).TotalMilliseconds <= 30.0) {
Application.DoEvents();
}
}
如果您不经常这样做,这是一个很好的,简单的解决方案。否则,我建议使用线程。
答案 2 :(得分:1)
在构造函数中,启动将在每个tick处调用方法的计时器控件。
timer.Interval = 1000;
timer.Tick += new EventHandler(TimerEventProcessor);
timer.Start();
............
private static void TimerEventProcessor(Object myObject,
EventArgs myEventArgs)
{
if(this.Opacity < 1)
this.Opacity += .1;
else
timer.Stop();
}
答案 3 :(得分:1)
用于减少不透明度的退出动画
///////\\\\\\ Coded by Error X Tech ///////\\\\\\
System.Windows.Forms.Timer timer = new System.Windows.Forms.Timer();
private void DecreaseOpacity(object sender, EventArgs e)
{
if (this.Opacity >= 0.1)
{
this.Opacity -= 0.04; //replace 0.04 with whatever you want
}
if (this.Opacity <= 0.0)
timer.Stop();
if (this.Opacity <= 0.1)
{
System.Environment.Exit(1);
Process.GetCurrentProcess().Kill();
}
}
private void Exit_Click(object sender, EventArgs e)
{
timer.Interval = 47; //replace 47 with whatever you want
timer.Tick += DecreaseOpacity;
timer.Start();
}
答案 4 :(得分:0)
在构造函数中,将不透明度设置为0并启动一个间隔为10或100毫秒的小计时器。在timer_Tick
事件中,您只需运行this.Opacity += 0.01;
这样可以使不透明度从0开始,每隔几毫秒增加0.01,直到它为1(不透明度为双倍,当它达到值1时,它完全不透明)
答案 5 :(得分:0)
启动应用程序时增加不透明度动画
///////\\\\\\ Coded by Error X Tech ///////\\\\\\
System.Windows.Forms.Timer timer = new System.Windows.Forms.Timer();
void IncreaseOpacity(object sender, EventArgs e)
{
if (this.Opacity <= 1) //replace 0.88 with whatever you want
{
this.Opacity += 0.01; //replace 0.01 with whatever you want
}
if (this.Opacity == 1) //replace 0.88 with whatever you want
timer.Stop();
}
private void Form1_Load(object sender, EventArgs e)
{
this.Opacity = .01;
timer.Interval = 10; //replace 10 with whatever you want
timer.Tick += IncreaseOpacity;
timer.Start();
}