网友您好, 请在下方输入框内输入要搜索的题目:
题目内容
(请给出正确答案)
在鼠标事件中,语句If Button=2 成立的条件是()。
A.按键盘数字键2
B.单击鼠标左键
C.单击鼠标右键
D.双击鼠标左键
参考答案和解析
(代码)
更多 “在鼠标事件中,语句If Button=2 成立的条件是()。A.按键盘数字键2B.单击鼠标左键C.单击鼠标右键D.双击鼠标左键” 相关考题
考题
在Java中,下列代码段允许按钮注册一个action事件的是()。
A.button.enableActionEvents();B.button.addActionListener(anActionListener);C.button.enableEvents(true);D.button.enableEvents(AWTEvent.ACTION_EVENT_MASK);
考题
在以下事件过程中,可以在用户按下鼠标右键时,显示一个上边框,以鼠标当前位置为中心的弹出式菜单,而且这个弹出式菜单还可以识别右键对菜单命令的选择,相应的选项是( )。A.Private Sub Form_MouseUp(Button As Integer, Shift As Integer, _X As Single, Y As Single)If Button=2 ThenPopupMenu mnuEdit, vbPopupMenuCenterAlign Or _vbPopupMenuRightButton, X, Y, mnuEditOpenEnd IfEnd SubB.Private Sub Form_MouseUp(Button As Integer, Shift As Integer, _X As Single, Y As Single)If Button=2 ThenPopupMenu mnuEdit,End IfEnd SubC.Private Sub Form_MouseUp(Button As Integer, Shift As Integer, _X As Single, Y As Single)PopupMenu mnuEdit, vbPopupMenuCenterAlign Or _vbPopupMenuRightButtonEnd SubD.Private Sub Form_MouseUp(Button As Integer , _Shift As Integer, X As Single, Y As Single)If Button=2 ThenPopupMenu mnuEdit, 2End IfEnd Sub
考题
编写如下事件过程:Private Sub Form_MouseDown(Button As Integer, Shift As Integer, _X As Single, Y As Single)If Shift=6 And Button=2 ThenPrint "PC"End IfEnd Sub程序运行后,为了在窗体上输出"PC",应执行的操作为( )。A.同时按下Shift键和鼠标左键B.同时按下Ctrl,Alt键和鼠标右键C.同时按下Shift键和鼠标右键D.同时按下Ctrl,Alt键和鼠标左键
考题
假定已经在菜单编辑器中建立了窗体的弹出式菜单,其顶级菜单项的名称为a1,其“可见”属性为False。程序运行后,单击鼠标左键或右键都能弹出菜单的事件过程是A.Private Sub Form_MouseDown(Button As Integer,_ Shift As Integer,X As Single,Y As Single) If Button=1 And Button=2 Then PopupMenu a1 End If End SubB.Private Sub Form_MouseDown(Button As Integer,_ Shift As Integer,X As Single,Y As Single) PopupMenu a1 End SubC.Private Sub Form_MousoDown(Button As Integer,_ Shift As Integer,X As Single,Y As Single) If Button=1 Then PopupMenu a1 End If End SubD.Private Sub Form_MouseDown(Button As Integer,_ Shift As Integer,X As Single,Y As Single) If Buaon=2 Then PopupMenu a1 End If End Sub
考题
以下属于鼠标触发的事件()。
A.draw_event()B.button_press_event()C.button_release_event()D.figure_enter_event()
考题
鼠标移动时触发的事件()。
A.draw_event()B.motion_notify_event()C.button_press_event()D.button_release_event()
考题
在以下事件过程中,可以在用户按下鼠标右键时,显示一个上边框,以鼠标当前位置为心的弹出式菜单,而且这个弹出式菜单还可以识别右键对菜单命令的选择,相应的选项;A.Private Sub Form. _ Mouse Up(Button As Integer,Shift AS Integer,_ X As Single,Y As Single) If Button=2 Then PopupMenu mnuEdit,vbPopupMenuCenterAlign Or_ vbPopupMenuRightButton,X,Y,mnuEditOpen End If End SubB.Private Sub Form. _ MouseUp(Button AS Integer,Shift AS Integer,_ X As Single,Y As Single) If Button=2 Then PopupMenu mnuEdit, End If End SubC.Private Sub Form. _ MouseUp(Button AS Integer,Shift AS Integer,_ X As Single,Y As Single) PopupMenu mnuEdit,vbPopupMenuCenterAlign Or_ vbPopupMenuRightButton End SubD.Private SUb Form. _ MouseUp(Button AS Integer,_ Shift As Integer,X As Single,Y As Single) If Button=2 Then PopupMenu mnuEdit,2 End If End Sub
考题
请完成下列Java程序:记录鼠标在窗口中的信息,包括鼠标的移动事件以及鼠标在窗口中的位置坐标,要求在窗口下方显示鼠标的事件和位置信息,在窗口上方有按钮控制程序的正常退出。注意:请勿改动main()主方法和其他已有语句内容,仅在下划线处填入适当的语句。源程序文件代码清单如下:import java.awt.*;import java.awt.event.*;public class ex12_2extends Frame. implements MouseMotionListener, ActionListenerprivate Label 1;private String str=" ";public static void main(String args[]){new ex12_2();}ex12_2( ){______;setSize(200,200);Button btn=new Button("exit");btn.addActionListener (this);add (btn, "North" );l=new Label(str);add (l, "South" );show ();}public void mouseMoved(MouseEvent event){str="Move: "+l. setText (str);}public void mouseDragged(MouseEvent event){}public void actionPerformed(ActionEvent event){if(event.getActionCommand().equals("exit")){System.exit(0);}}}
考题
设已经在菜单编辑器中设计了窗体的快捷菜单,其顶级菜单为Bt,取消其“可见”属性,运行时,在以下事件过程中,可以使快捷菜单相应鼠标右键菜单的是A.Private Sub Form_MouseDown(Button As Integer, Shift As Integer,_ X As Single, Y As Single) If Button=2 Then PopupMenu Bt, 2 End SubB.Private Sub Form_MouseDown(Button As Integer, Shift As Integer, _ X As Single, Y As Single) PopupMenu Bt End SuhC.Private Sub Form. MouseDown(Button As Integer, Shift As Integer, _ X As Single, Y As Single) PopupMenu Bt,0 End SubD.Private Sub Form_MouseDown(Button As Integer, Shift As Integer, _ X As Single, Y As Single) If (Button=vbLeftButton) Or ( Button=vbRightButton) Then PopupMenu Bt End Sub
考题
假定有如下事件过程: Private Sub Form. MouseDown(Button As Integer,Shift As Integer,X As Single,Y As Single) If Button=2 Then PopupMenu popForm End if End Sub 则以下描述中错误的是______。A.该过程的功能是弹出一个菜单B.popForm是在菜单编辑器中定义的弹出式菜单的名称C.参数X、Y指明鼠标的当前位置D.Button=2表示按下的是鼠标左键
考题
编写如下事件过程: Private Sub Form-MouseDown(Button As Integer,Shift As Integer,X As Single,Y As Single) If Shift=6 And Button=2 Then Print"Hello" End If End Sub 程序运行后,为了在窗体上输出“Hello”,应在窗体上执行以下( )操作。A.同时按下Shift键和鼠标左键B.同时按下Shift键和鼠标右键C.同时按下Ctrl、Alt键和鼠标左键D.同时按下Ctrl、Alt键和鼠标右键
考题
下面有关注释语句的格式,错误的是A.Rem注释内容B.′注释内容C.a=3:b=2 ′对a、b赋值D.Private Sub Command1_MouseDown(button As Integer , shift As Integer , _ Rem 鼠标按下事件的命令调用过程 X As Single ,Y As Single.
考题
设已经在菜单编辑器中设计了窗体的快捷菜单,某顶级菜单为a1,且取消其“可见”属性。运行时,哪个事件过程可以使快捷菜单的菜单项响应鼠标左键单击和右健单击的事件过程是A.Private Sub Form_MouseDown(Button As Integer,Shift As Integer,X As Single,Y As Single) If Button=2 Then PopupMenu a1,2 End SubB.Private Sub Form_MouseDown(ButtonAsInteger,ShiftAsInteger,X As Single,Y As Single) PopupMenu a1,0 End SubC.Private Sub Form_Mouse Down(Button As Integer,Shift As Integer,X As Single,Y As Single) PopupMenu a1 End SubD.Private Sub Form_MouseDown(Button As Integer,Shift As Integer,X As Single,Y As Single) If(Button=vbLetfButton) Or (Button=vbRightButton) Then PopupMenu a1 End Sub
考题
假定有如下事件过程: Private Sub Form_MouseDown(Buaon As Integer,Shift As Integer,x As Single,y_As Single) If Button=2 Then PopupMenu popForm End If End Sub 则以下描述中错误的是A.该过程的功能是弹出一个菜单B.popForm是在菜单编辑器中定义的弹出式菜单的名称C.参数x、y指明鼠标的当前位置D.Button=2表示按下的是鼠标左键
考题
下面有关注释语句的格式,错误的是A.Rem注释内容B.′注释内容C.a=3:b=2,′对a、b赋值D.Private Sub Command1_MouseDown(button As Integer,shift As Integer,_Rem鼠标按下事件的命令调用过程X As Single,Y As Single)
考题
假定已经在菜单编辑器中建立了窗体的弹出式菜单,其顶级菜单的名称为a1,其“可见”属性为False,则程序运行后,可以同时响应鼠标左键单击和右键单击的事件过程是 ______。A.Private Sub Form_ MouseDown (Button As Integer, _ Shift As Integer, X As Single, Y As SinglE)If Button = 1 And Button = 2 Then PopupMenu al End If End SubB.Private Sub Form_ MouseDown (Button As Integer, _ Shift As Integer, X As Single, Y As SinglE)PopupMenu a1 End SubC.Private Sub Form_ MouseDown (Button As Integer, _ Shift As Integer, X As Single, Y As SinglE)If Button = 1 Then PopupMenu a 1 End If End SubD.Private Sub Form_ MouseDown(Button As Integer, _ Shift As Integer, X As Single, Y As SinglE)If Button = 2 Then PopupMenu a 1 End If End Sub
考题
假定有如下事件过程: Private Sub Form_MouseDown(Button as Integer,Shift as Integer, X as Single,Y as Single) If Button=2 Then PopupMenu PopForm End Sub 则以下描述中错误的是( )。A、该过程的功能是弹出一个菜单B、popForm是在菜单编辑器中定义的弹出式菜单的名称C、参数X、Y指明鼠标的当前位置D、Button=2表示按下的是鼠标左键
考题
在ActionScript2.0中,按钮可以响应多种事件。如果希望让按钮响应“鼠标滑入”事件,应该使用的语句是()。A、on(releasE.B、on(rollover)C、on(dragOut)D、on(dragIn)
考题
单选题窗体的MouseUp事件过程如下:Private Sub Form_MouseUp(Button As Integer, Shift As Integer, X As Single,Y As Single)……End Sub关于以上定义,以下叙述中错误的是( )。A
根据Shift参数,能够确定使用转换键的情况B
根据X、Y参数可以确定触发此事件时鼠标的位置C
Button参数的值是在MouseUp事件发生时,系统自动产生的D
MouseUp是鼠标向上移动时触发的事件
考题
单选题假定有如下事件过程: Private Sub Form_MouseDown(Button as Integer,Shift as Integer, X as Single,Y as Single) If Button=2 Then PopupMenu PopForm End Sub 则以下描述中错误的是( )。A
该过程的功能是弹出一个菜单B
popForm是在菜单编辑器中定义的弹出式菜单的名称C
参数X、Y指明鼠标的当前位置D
Button=2表示按下的是鼠标左键
热门标签
最新试卷