java窗體的-九游会j9娱乐平台

⑴ java中窗體的標題欄如何設為透明

import java.awt.borderlayout;
import java.awt.dimension;
import java.awt.graphics;
import java.awt.image;
import java.awt.point;
import java.awt.rectangle;
import java.awt.robot;
import java.awt.toolkit;
import java.awt.event.componentevent;
import java.awt.event.componentlistener;
import java.awt.event.windowevent;
import java.awt.event.windowfocuslistener;

import javax.swing.jbutton;
import javax.swing.jcomponent;
import javax.swing.jframe;
import javax.swing.jlabel;
import javax.swing.uimanager;

import com.birosoft.liquid.liquidlookandfeel;

public class testevent extends jcomponent
implements componentlistener,windowfocuslistener {

private jframe frame;

private boolean start = false;

private image background;

private point p;

// 獲得當前屏幕快照
public void updatebackground() {
try {
robot rbt = new robot();
toolkit tk = toolkit.getdefaulttoolkit();
dimension dim = tk.getscreensize();
background = rbt.createscreencapture(new rectangle(0, 0, (int) dim
.getwidth(), (int) dim.getheight()));
} catch (exception ex) {
// p(ex.tostring());
// 此方法沒有申明過 ，因為無法得知上下文 。因為不影響執行效果 ，先注釋掉它 ex.printstacktrace();
}

}

// 將窗口掉離出屏幕以獲得純粹的背景圖象
public void refresh() {
if (start == true) {
this.updatebackground();
frame.setlocation(p);
if (p.x < 0 || p.y < 0)
frame.setlocation(0, 0);
this.repaint();
}
}

public void componenthidden(componentevent e) {
system.out.println("hidden");
}

// 窗口移動時
public void componentmoved(componentevent e) {
system.out.println("moved");
this.repaint();
}

// 窗口改變大小時
public void componentresized(componentevent e) {
system.out.println("resized");
this.repaint();
}

public void componentshown(componentevent e) {
system.out.println("shown");
}

// 窗口得到焦點後,用refresh()方法更新界面
public void windowgainedfocus(windowevent e) {
system.out.println("gainedfocus");
refresh();
start = false;
}

// 窗口失去焦點後,將其移出屏幕
public void windowlostfocus(windowevent e) {
system.out.println("lostfocus");
if (frame.isshowing() == true) {
system.out.println("visible");
} else {
system.out.println("invisible");
}
start = true;
p = frame.getlocation();
frame.setlocation(-2000, -2000);
}

public testevent(jframe frame) {
super();
this.frame = frame;
updatebackground();
this.setsize(200, 120);
this.setvisible(true);
frame.addcomponentlistener(this);
frame.addwindowfocuslistener(this);

}

// 繪制外觀,注意,其中 pos,offset 是為了將特定部分的圖象貼到窗口上
public void paintcomponent(graphics g) {
point pos = this.getlocationonscreen();
point offset = new point(-pos.x, -pos.y);
g.drawimage(background, offset.x, offset.y, null);
}

/**
* @param args
*/
public static void main(string[] args) {
try {
// uimanager.setlookandfeel("org.fife.plaf.office2003.office2003lookandfeel");
// uimanager.setlookandfeel("org.fife.plaf.officexp.officexplookandfeel");
// uimanager.setlookandfeel("org.fife.plaf.officexp.officexplookandfeel");
uimanager.setlookandfeel("com.birosoft.liquid.liquidlookandfeel");
liquidlookandfeel.setliquiddecorations(true);
// liquidlookandfeel.setliquiddecorations(true, "mac");
// uimanager.setlookandfeel(new substancelookandfeel());
// uimanager.setlookandfeel(new smoothlookandfeel());
// uimanager.setlookandfeel(new quaqualookandfeel());
// uimanager.put("swing.boldmetal", false);
if (system.getproperty("substancelaf.usedecorations") == null) {
jframe.(true);
// jdialog.(true);
}
system.setproperty("sun.awt.noerasebackground", "true");
// substancelookandfeel.setcurrenttheme(new
// substancelightaquatheme());

// uimanager.setlookandfeel("org.fife.plaf.visualstudio2005.visualstudio2005lookandfeel");
} catch (exception e) {
system.err.println("oops! something went wrong!");
}

jframe frame = new jframe("transparent window");
testevent t = new testevent(frame);
t.setlayout(new borderlayout());
jbutton button = new jbutton("this is a button");
t.add("north", button);
jlabel label = new jlabel("this is a label");
t.add("south", label);
frame.getcontentpane().add("center", t);
frame.pack();
frame.setsize(150, 100);
frame.show();
frame.setdefaultcloseoperation(jframe.exit_on_close);
// t.start=true;
}

}

⑵ java swing 窗體關閉的方法 有哪些

jframe的關閉方法：

setdefaultcloseoperation(exit_on_close);

frame的關閉方法如下：

this.addwindowlistener(new java.awt.event.windowadapter() {

public void windowclosing(java.awt.event.windowevent e) {

system.exit(0);

}

});
一般兩種方法：
一種是system.exit(0);
另一種是setvisible(false);