keyTyped()

本参考资料用于Processing 3.0+。 如果你使用的是前一版本,请在使用软件帮助菜单内的参考资料。. If you see any errors or have suggestions, please let us know. If you prefer a more technical reference, visit the Processing Core Javadoc and Libraries Javadoc.

名称

keyTyped()

示例
 // Run this program to learn how each of these functions // relate to the others. 
void draw()
{
 } // Empty draw() needed to keep the program running 
void keyPressed()
{  
println("pressed " + int(key) + " " + keyCode);


  } 
void keyTyped()
{  
println("typed " + int(key) + " " + keyCode);


  } 
void keyReleased()
{  
println("released " + int(key) + " " + keyCode);


  }  
描述 The keyTyped() function is called once every time a key is pressed, but action keys such as Ctrl, Shift, and Alt are ignored.

Because of how operating systems handle key repeats, holding down a key may cause multiple calls to keyTyped(). The rate of repeat is set by the operating system, and may be configured differently on each computer.

Mouse and keyboard events only work when a program has draw(). Without draw(), the code is only run once and then stops listening for events.

语法
keyTyped() keyTyped(event)
返回值 void
相关 keyPressed
key
keyCode
keyReleased()

Updated on October 2, 2018 05:02:05pm EDT

keyTyped()