WideStudio/MWT Programming Guide	WideStudio/MWT Index Table of contents

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输入字段中键盘输入的处理

通过WSEV_KEY_HOOK触发器的事件处理，对输入字段中键盘输入进行处理。

# WSEV_KEY_HOOK触发器的事件处理例
# 设置WSEV_KEY_HOOK触发器
...

def hookop(object)
  # 获取键盘码
  key = Mwt::WSGIappKeyboard().getKey()
  if  (key >= Mwt::WSK_0    && key <= Mwt::WSK_9   ) ||
       (key >= Mwt::WSK_KP_0 && key <= Mwt::WSK_KP_9) ||
        key == Mwt::WSK_plus      || key == Mwt::WSK_minus  ||
        key == Mwt::WSK_BackSpace || key == Mwt::WSK_Delete || key == Mwt::WSK_Insert ||
        key == Mwt::WSK_space     || key == Mwt::WSK_Up     || key == Mwt::WSK_Down   ||
        key == Mwt::WSK_Left      || key == Mwt::WSK_Right  || key == Mwt::WSK_Return ))
    # 只接受关心的键盘输入
    return
  end
  # 屏蔽其他键盘输入
  Mwt::WSGIappKeyboard().setKey(0)
end

上述的例子中，只接受数字输入。通过键盘对象的getKey()函数获得当前的键盘输入码。 通过 setKey(0) 函数将不需要的输入内容删除。