英文:
How to make visible a control in a For Cycle?
问题
我有三个 SWT 组控件，除了编号不同之外，它们的名称相同（即 'grp1'，'grp2'，'grp3'）。我希望在 for 循环中使这些组控件可见；为此，我创建了一个包含 Group 控件的数组。
这是代码：
Group[] grpArray = new Group[3];
grpArray[0] = grp1;
grpArray[1] = grp2;
grpArray[2] = grp3;
txtLvl = new Text(composite, SWT.BORDER | SWT.READ_ONLY);
txtLvl.addModifyListener(new ModifyListener() {
public void modifyText(ModifyEvent e) {
for (int i = 1; i <= Integer.parseInt(txtLvl.getText()); i++) {
grpArray[i-1].setVisible(true);
}
}
});
这是错误代码：
at it.anabasibdg.viste.AnagPdc$4.modifyText(AnagPdc.java:296)
at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)
at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Text.wmCommandChild(Unknown Source)
at org.eclipse.swt.widgets.Control.WM_COMMAND(Unknown Source)
at org.eclipse.swt.widgets.Control.windowProc(Unknown Source)
at org.eclipse.swt.widgets.Display.windowProc(Unknown Source)
at org.eclipse.swt.internal.win32.OS.CallWindowProcW(Native Method)
at org.eclipse.swt.internal.win32.OS.CallWindowProc(Unknown Source)
at org.eclipse.swt.widgets.Text.callWindowProc(Unknown Source)
at org.eclipse.swt.widgets.Control.windowProc(Unknown Source)
at org.eclipse.swt.widgets.Text.windowProc(Unknown Source)
at org.eclipse.swt.widgets.Display.windowProc(Unknown Source)
at org.eclipse.swt.internal.win32.OS.SetWindowTextW(Native Method)
at org.eclipse.swt.internal.win32.OS.SetWindowText(Unknown Source)
at org.eclipse.swt.widgets.Text.setText(Unknown Source)
at it.anabasibdg.viste.AnagPdc$3.widgetSelected(AnagPdc.java:213)
at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)
at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source)
at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)
at it.anabasibdg.viste.Main.open(Main.java:58)
at it.anabasibdg.viste.LoginForm$3.widgetSelected(LoginForm.java:191)
at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)
at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source)
at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)
at it.anabasibdg.viste.LoginForm.open(LoginForm.java:110)
at it.anabasibdg.viste.LoginForm$1.run(LoginForm.java:59)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
at it.anabasibdg.viste.LoginForm.main(LoginForm.java:55)
英文:
I have three SWT group control with the same name apart from the number (i.e. 'grp1','grp2','grp3').
I want to make visible the group control in a for cycle; for this I have created an Array that contains the Group control.
This is the code:
Group [] grpArray = new Group[3];
grpArray[0] = grp1;
grpArray[1] = grp2;
grpArray[2] = grp3;
txtLvl = new Text(composite, SWT.BORDER | SWT.READ_ONLY);
txtLvl.addModifyListener(new ModifyListener() {
public void modifyText(ModifyEvent e) {
for (int i = 1; i <= Integer.parseInt(txtLvl.getText()); i++) {
grpArray[i-1].setVisible(true);
}
}
}
);
This is the error code:
at it.anabasibdg.viste.AnagPdc$4.modifyText(AnagPdc.java:296)
at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)
at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Text.wmCommandChild(Unknown Source)
at org.eclipse.swt.widgets.Control.WM_COMMAND(Unknown Source)
at org.eclipse.swt.widgets.Control.windowProc(Unknown Source)
at org.eclipse.swt.widgets.Display.windowProc(Unknown Source)
at org.eclipse.swt.internal.win32.OS.CallWindowProcW(Native Method)
at org.eclipse.swt.internal.win32.OS.CallWindowProc(Unknown Source)
at org.eclipse.swt.widgets.Text.callWindowProc(Unknown Source)
at org.eclipse.swt.widgets.Control.windowProc(Unknown Source)
at org.eclipse.swt.widgets.Text.windowProc(Unknown Source)
at org.eclipse.swt.widgets.Display.windowProc(Unknown Source)
at org.eclipse.swt.internal.win32.OS.SetWindowTextW(Native Method)
at org.eclipse.swt.internal.win32.OS.SetWindowText(Unknown Source)
at org.eclipse.swt.widgets.Text.setText(Unknown Source)
at it.anabasibdg.viste.AnagPdc$3.widgetSelected(AnagPdc.java:213)
at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)
at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source)
at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)
at it.anabasibdg.viste.Main.open(Main.java:58)
at it.anabasibdg.viste.LoginForm$3.widgetSelected(LoginForm.java:191)
at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)
at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source)
at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)
at it.anabasibdg.viste.LoginForm.open(LoginForm.java:110)
at it.anabasibdg.viste.LoginForm$1.run(LoginForm.java:59)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
at it.anabasibdg.viste.LoginForm.main(LoginForm.java:55)
答案1
得分: -1
我刚刚是这样解决我的问题的：
private ArrayList<Group> grpArray1 = new ArrayList<Group>();
txtLvl.addModifyListener(new ModifyListener() {
public void modifyText(ModifyEvent e) {
groupArray(grp1, grp2, grp3);
for (Group grp : grpArray1) {
grp.setVisible(true);
}
}
});
public void groupArray(Group... c) {
for (Group group : c) {
grpArray1.add(group);
}
}
英文:
I have just solved my problem in this way:
private ArrayList<Group> grpArray1 = new ArrayList<Group>();
txtLvl.addModifyListener(new ModifyListener() {
public void modifyText(ModifyEvent e) {
groupArray(grp1, grp2,grp3);
for (Group grp : grpArray1) {
grp.setVisible(true);
}
public void groupArray(Group... c) {
for (Group group : c) {
grpArray1.add(group);
}
}
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