en:gui-usage
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Beide Seiten der vorigen RevisionVorhergehende ÜberarbeitungNächste Überarbeitung | Vorhergehende Überarbeitung | ||
en:gui-usage [2015/01/01 18:23] – [Canvas] roehner | en:gui-usage [2022/09/02 10:20] (aktuell) – Externe Bearbeitung 127.0.0.1 | ||
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With the method setLocation(int x, int y) of a JLabel-component you can animate an image. | With the method setLocation(int x, int y) of a JLabel-component you can animate an image. | ||
+ | < | ||
\\ | \\ | ||
\\ | \\ | ||
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---- | ---- | ||
- | ==== JRadioButton & JButtonGroup | + | ==== ButtonGroup |
{{: | {{: | ||
- | JRadiobuttons offer different options, from which you can choose just one. | + | A Buttongroup groups Radiobuttons or Checkboxes. Set the attribute Checkboxes to true if you want a group of Checkboxes. Enter your options using the Items attribute. |
- | To group the JRadioButtons | + | |
- | Write the name of this ButtonGroup for each JRadioButton as value of the attribute | + | |
- | The Java-Editor places this method into the java source code: | + | For a buttongroup of radiobuttons the Java-Editor places this method into the java source code: |
- | <code java> | + | <code java> |
- | so it's easy to get the selected JRadioButton of a ButtonGroup. Example: | + | so it's easy to get the selected JRadioButton of a Buttongroup. Example: |
- | <code java> | + | <code java> |
\\ | \\ | ||
---- | ---- | ||
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If you minimize your Java-Application with a Canvas-component und show it up again, the content of the Canvas-Component is lost. To avoid this, you have to create a subclass from Canvas and do the drawing in the // | If you minimize your Java-Application with a Canvas-component und show it up again, the content of the Canvas-Component is lost. To avoid this, you have to create a subclass from Canvas and do the drawing in the // | ||
+ | ---- | ||
- | The turtle which belongs to the Java-Editor is an example of a Canvas-subclass.\\ | + | ==== Turtle ==== |
+ | {{: | ||
+ | |||
+ | Since Java-Editor | ||
+ | It's conception | ||
+ | |||
+ | {{: | ||
+ | |||
+ | Since Java-Editor version 13.00 the Turtle-component has changed. We now have an animated Turtle-Component based on the Turtle from [[http:// | ||
+ | |||
+ | Due to didactic reduction and technical issues the GUI doesn' | ||
+ | |||
+ | {{: | ||
+ | |||
+ | Before Version 13.00 we had another Turtle-component. If you want to use a program with this older Turtle you have to import it like this: < | ||
+ | |||
+ | As a didactic reduction the turtle has a // | ||
+ | |||
+ | Example: | ||
+ | {{: | ||
+ | |||
+ | Since V13.00 the // | ||
+ | |||
+ | \\ | ||
---- | ---- | ||
- | ==== JTable ==== | ||
- | {{: | ||
- | Set the number of columns and rows with the attributes // | + | ==== JMenuBar ==== |
+ | {{: | ||
- | With the method // | + | With a JMenuBar-component |
+ | to be displayed in the menu bar. | ||
+ | \\ | ||
+ | ---- | ||
- | Example: " | + | ==== JMenu ==== |
+ | {{:de: | ||
- | <code java> | + | With a JMenu-component you create a menu for a menu bar. In the object-inspector you specify the desired menu bar at the //MenuBar// attribute, the menu commands |
- | int i = jTabelle.getSelectedRow(); | + | |
- | jTabelle.setValueAt(" | + | |
- | </code> | + | |
+ | For each menu command the Java-Editor creates a corresponding event method. | ||
+ | \\ | ||
+ | ---- | ||
+ | |||
+ | ==== JPopupMenu ==== | ||
+ | {{: | ||
+ | |||
+ | With a JPopupMenu-component you create a popup menu. In the example a canvas component with yellow background reacts on a rightclick and shows the popup menu. | ||
+ | |||
+ | {{: | ||
+ | |||
+ | In the object inspector you input at the attribute // | ||
+ | |||
+ | For each menu command the Java-Editor creates a corresponding event method. | ||
+ | |||
+ | \\ | ||
+ | ---- | ||
==== Timer ==== | ==== Timer ==== | ||
{{: | {{: | ||
Zeile 240: | Zeile 280: | ||
Example: | Example: | ||
- | <code java> timer1.start();</ | + | <code java> |
+ | ... do anything | ||
+ | timer1.stop(); | ||
+ | </ | ||
+ | \\ | ||
+ | ---- | ||
+ | |||
+ | ==== JTable ==== | ||
+ | {{: | ||
+ | |||
+ | Set the number of columns and rows with the attributes // | ||
+ | |||
+ | With the method // | ||
+ | |||
+ | Example: " | ||
+ | |||
+ | <code java> | ||
+ | int i = jTabelle.getSelectedRow(); | ||
+ | jTabelle.setValueAt(" | ||
+ | </ | ||
+ | \\ | ||
+ | ---- | ||
en/gui-usage.1420133011.txt.gz · Zuletzt geändert: 2015/01/01 19:23 (Externe Bearbeitung)