Form1_Paint事件 [英] Form1_Paint event

问题描述

我想知道它是如何工作的。

i wonder how it works..

我有这个代码。它应该在表单上绘制图片（位图图像​​）。但我不知道多久被触发。我需要它经常触发（至少每1-2秒）。我需要它将参数发送给我拥有的另一个对象（游戏游戏）..所以游戏对象将绘制一切

i have this code. it should paint pictures (Bitmap images ) on the form..constantly. but i dont know how often it is triggered. i need it to be triggered very often (at least every 1-2 seconds). i need it to send the parameters to another object that i have (Game game).. so game object will draw everything

   public void Form1_Paint(object sender, EventArgs e)
{

        //the animation has 4 cell to draw, so the arguments are passed to the game objects instructing it to which cells to draw.
        using (Graphics g = this.CreateGraphics())
        {
            game.Draw(g, animationTimerCounter);
        }
}

事件何时触发？

推荐答案

当表单（或其一部分）必须重绘时，调用paint事件，例如表单被移动，或者另一个窗口隐藏了其中的一部分等。

A paint event is called when the form (or part of it) has to be redrawn, e.g. the form is moved, or another window has hidden a part of it etc.

您可以通过调用 yourControl.Invalidate（） 方法。

You can force a Paint event by calling yourControl.Invalidate() method.

在您的情况下，您可以使用例如一个Timer来强制绘制所需频率（例如每1-2秒）。

In your case you could use for example a Timer to force a Paint with the desired frequency (e.g. every 1-2 seconds).

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