我在欧洲最高的山峰上制作地图。我在Label中设置了背景，以使按钮不可见：[编辑完整代码]
package topOfEurope;
//Importing packages
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.*;
import org.eclipse.wb.swt.SWTResourceManager;
import org.eclipse.swt.*;
public class display {
public static String[] country = {"Albania","Andorra","Austria", "Azerbaijan","Belarus","Belgium","Bosnia and Herzegovina",
"Bulgaria","Croatia","Cyprus","Czech Republic","Denmark","Estonia","Finland","France","Georgia",
"Germany","Greece","Hungary","Iceland","Ireland","Italy","Kosovo","Latvia","Liechtenstein","Lithuania",
"Luxembourg","Macedonia","Malta","Moldova","Monaco","Montenegro","Netherlands","Norway","Poland",
"Portugal","Romania","Russia","San Merino","Serbia","Slovakia","Slovenia","Spain","Sweden","Switzerland",
"Turkey","Ukraine","United Kingdom","Vatican City"};
public static String[] highestPoint = {"Mount Korab","Coma Pedrosa","Großglockner","Bazardüzü","Dzyarzhynskaya Hara","Signal de Botrange",
"Maglić","Musala","Dinara","Mount Olympus (Cyprus)","Sněžka","Møllehøj","Suur Munamägi","Halti","Mont Blanc","Shkhara",
"Zugspitze","Mount Olympus","Kékes","Hvannadalshnúkur","Carrauntoohil","Monte Bianco","Djeravica/Great Rudoka",
"Gaizinkalns","Vorder Grauspitz","Aukštojas Hill","Kneiff","Mount Korab","Ta' Dmejrek","Bălăneşti","Chemin des Révoires",
"Zla Kolata","Vaalserberg","Galdhøpiggen","Mount Rysy","Mount Pico","Moldoveanu Peak","Mount Elbrus","Monte Titano",
"Midžor","Gerlachovský štít","Triglav","Mulhacén","Kebnekaise","Monte Rosa","Mahya Dağı","Hoverla","Ben Nevis",
"unnamed location"};
public static String[] MAMSL = {"2764","2942","3798","4466","345","694","2386","2925","1831","1952","1603","171","318","1324","4810","5201",
"2962","2919","1014","2110","1041","4810","2656","311","2599","294","560","2764","253","430","163","2534","321","2469",
"2499","2351","2544","5642","749","2169","2655","2864","3479","2104","4634","1031","2061","1344","75"};
protected Shell shell;
public Button _2;
private Label txtCountry;
private Label txtHighestMountain;
private Label txtMeters;
private Label lblNewLabel;
private Button button;
private Button _3;
/**
* Launch the application.
* @param args
*/
public static void main(String[] args) {
try {
display window = new display();
window.open();
} catch (Exception e) {
e.printStackTrace();}}
/**
* Open the window.
*/
public void open() {
Display display = Display.getDefault();
createContents();
shell.open();
shell.layout();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}}}
/**
* Create contents of the window.
*/
private SelectionListener getCountrySelectionListener(final String country, final String MAMSL, final String highestPoint) {
return new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
try{
txtCountry = new Label(shell, SWT.BORDER);
txtCountry.setBackground(SWTResourceManager.getColor(SWT.COLOR_WHITE));
txtCountry.setText("Country: \r\n" + country);
txtCountry.setBounds(1082, 0, 349, 81);
txtCountry.setFont(SWTResourceManager.getFont("Lucida Grande", 20, SWT.BOLD));
txtHighestMountain = new Label(shell, SWT.BORDER);
txtHighestMountain.setBackground(SWTResourceManager.getColor(SWT.COLOR_WHITE));
txtHighestMountain.setText("Highest Mountain: \r\n" + highestPoint);
txtHighestMountain.setBounds(1082, 81, 349, 81);
txtHighestMountain.setFont(SWTResourceManager.getFont("Lucida Grande", 20, SWT.BOLD));
txtMeters = new Label(shell, SWT.BORDER);
txtMeters.setBackground(SWTResourceManager.getColor(SWT.COLOR_WHITE));
txtMeters.setText("Meters above sea level: \r\n" + MAMSL);
txtMeters.setBounds(1082, 159, 349, 81);
txtMeters.setFont(SWTResourceManager.getFont("Lucida Grande", 20, SWT.BOLD));
}
catch(Exception exc) {
MessageDialog.openError(shell,"Error","anuallyInvestedMoney amount");
return;
}
}};}
protected void createContents() {
shell = new Shell();
shell.setImage(null);
shell.setSize(1440, 899);
shell.setText("List of highest points of European countries");
//testing
System.out.println(getInfo.getInfo3());
//Setting background image
//shell.setBackgroundImage(SWTResourceManager.getImage("/Users/Hadle/Downloads/europe_topography_map_en.jpg"));
Label lblNewLabel = new Label(shell, SWT.NONE);
lblNewLabel.setImage(SWTResourceManager.getImage("/Users/Hadle/Downloads/europe_topography_map_en.jpg"));
lblNewLabel.setBounds(-206, -170, 1473, 1198);
//Creating buttons
Button _1 = new Button(shell, SWT.NONE);
_1.setBounds(532, 695, 23, 50);
_1.setText("1");
_2 = new Button(shell, SWT.NONE);
_2.setBounds(166, 655, 94, 28);
_2.setText("2");
_3 = new Button(shell, SWT.NONE);
_3.setBounds(410, 552, 67, 38);
_3.setText("New Button");
//Creating button array
Button[] btnArr = new Button[] {
_1, _2, _3
};
//Assigning values to buttons
for(int i = 0; i < btnArr.length; i++) {
btnArr[i].addSelectionListener(getCountrySelectionListener(country[i],MAMSL[i],highestPoint[i]));
} } }
当我运行程序并单击一个按钮查看一个国家中最高山的信息时，它工作正常。但是，当我想点击另一个国家/地区时，代码不会响应，但会停留在最后一个按钮的信息中。因此，我正在寻找改变的建议，以便我可以点击许多按钮，它将显示所有不同的国家而不会卡住。
为了给按钮分配值，我使用以下代码：
//Creating button array
Button[] btnArr = new Button[] {
_1, _2
};
//Assigning values to buttons
for(int i = 0; i < btnArr.length; i++) {
btnArr[i].addSelectionListener(getCountrySelectionListener(country[i],MAMSL[i],highestPoint[i]));
干杯
答案 0 :(得分：0)
我认为你刚才没有创建按钮_2。
//wrong
_2 = new Button();
//right
Button _2 = new Button();
如果那是错的，我很抱歉。我在很多方面都不了解你的代码。 你可以使用JButton，因为没有.setText或带有两个参数的新Button（）。
另一个问题可能是您没有设置布局。
frame.setLayout(null);
否则我需要整个代码。
干杯