SWT之处理键盘事件的方法
Color red = display.getSystemColor(SWT.COLOR_RED);
Font font = display.getSystemFont();
control.setFont(font)
|
Style |
Description |
|---|---|
|
SWT.WRAP |
Wrap the text to fit the visible area |
|
SWT.LEFT |
Left-align the label |
|
SWT.CENTER |
Center-align the label |
|
SWT.RIGHT |
Right-align the label |
|
SWT.SEPARATOR |
Draw a separator instead of text or an image |
|
SWT.HORIZONTAL |
Draw the separator horizontally |
|
SWT.VERTICAL |
Draw the separator vertically |
|
SWT.SHADOW_IN |
Draw the separator with a "shadow in" effect |
|
SWT.SHADOW_OUT` |
Draw the separator |
键盘事件类型
|
SWT.KeyDown |
A key was pressed |
||
|
SWT.KeyUp |
A key was released |
|
KeyEvent |
KeyListener (and KeyAdapter) |
keyPressed(KeyEvent) keyReleased(KeyEvent) |
|
关于event中的character特殊键值
|
SWT.BS |
退回 ('/b') |
|
SWT.CR |
回车 ('/r') |
|
SWT.DEL |
删除 ('/u007F') |
|
SWT.ESC |
ESC ('/u001B') |
|
SWT.LF |
换行 ('/n') |
|
SWT.TAB |
TAB跳格 ('/t') |
|
SWT.CONTROL |
<Ctrl>同 SWT.CTRL |
|
SWT.SHIFT |
<Shift> |
|
SWT.ALT |
<Alt> |
以下代码来自摘录
Listener listener = new Listener() {
public void handleEvent(Event event) {
String string =
event.type == SWT.KeyDown ? "DOWN": "UP ";
if ((event.stateMask & SWT.CTRL) != 0)
string += " CTRL";
if ((event.stateMask & SWT.ALT) != 0)
string += " ALT";
if ((event.stateMask & SWT.SHIFT) != 0)
string += " SHIFT";
switch (event.character) {
case 0: string += " '//0'"; break;
case SWT.BS: string += " '//b'"; break;
case SWT.CR: string += " '//r'"; break;
case SWT.DEL: string += " DEL"; break;
case SWT.ESC: string += " ESC"; break;
case SWT.LF: string += " '//n'"; break;
case SWT.TAB: string += " '//t'";
break;
default:
string += " '" + event.character + "'";
break;
}
text.addListener(SWT.Modify, new Listener() {
public void handleEvent(Event e) {
modified[0] = true;
}
});
final ProgressBar bar =new ProgressBar(shell,SWT.NONE);
bar.setSize(200, 32);
new Thread() {
public void run() {
for (int i = 0; i <= maximum; i++) {
try {
Thread.sleep(100);
} catch (Throwable th) {
}
final int index = i;
display.asyncExec(new Runnable() {
public void run() {
bar.setSelection(index);
}
});
}
}
}.start();
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