import com.sun.jna.Pointer;
\nimport com.sun.jna.platform.win32.User32;
\nimport com.sun.jna.platform.win32.WinDef;
\nimport javafx.application.Application;
\nimport javafx.scene.Scene;
\nimport javafx.scene.control.Label;
\nimport javafx.scene.layout.Pane;
\nimport javafx.stage.Stage;
\nimport javafx.stage.StageStyle;
\n
\nimport static com.sun.jna.platform.win32.WinUser.GWL_STYLE;
\n
\npublic class SimpleWindowApplication extends Application {
\n
\n
\n
\n public static void main(String[] args) {
\n launch(args);
\n }
\n
\n @Override
\n public void start(final Stage stage) {
\n Scene scene = new Scene(new Pane(new Label("Hello World")));
\n stage.initStyle(StageStyle.UNDECORATED);
\n stage.setTitle("Find this window");
\n stage.setScene(scene);
\n stage.show();
\n long lhwnd = com.sun.glass.ui.Window.getWindows().get(0).getNativeWindow();
\n Pointer lpVoid = new Pointer(lhwnd);
\n WinDef.HWND hwnd = new WinDef.HWND(lpVoid);
\n final User32 user32 = User32.INSTANCE;
\n int oldStyle = user32.GetWindowLong(hwnd, GWL_STYLE);
\n System.out.println(Integer.toBinaryString(oldStyle));
\n int newStyle = oldStyle | 0x00020000;\/\/WS_MINIMIZEBOX
\n System.out.println(Integer.toBinaryString(newStyle));
\n user32.SetWindowLong(hwnd, GWL_STYLE, newStyle);
\n }
\n}<\/div><\/div>\n
It uses the JNA library add the WS_MINIMIZEBOX style to the existing Window.<\/p>\n
Dependencies required if your using gradle are<\/p>\n
compile 'net.java.dev.jna:jna:4.3.0'
\n compile 'net.java.dev.jna:jna-platform:4.3.0'<\/div><\/div>\n
<\/b>
\nJava 9<\/strong><\/p>\nJava 9 modularity adds stronger encapsulation, if you attempt to run the sample program under Java 9, you’ll get IllegalAccessError as the com.sun.glass.ui package is not visible to unnamed modules<\/p>\n
To make the example run on Java 9 you will need to add this additional VM Option<\/p>\n
--add-exports=javafx.graphics\/com.sun.glass.ui=ALL-UNNAMED<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"
The JavaFX undecorated window gives you a blank canvas, giving freedom to how your window looks without having to accept the default Windows title bar and buttons such as the Minimize, Maximise and Close buttons. On Windows, the disadvantage of the Undecorated stage is if you click on the icon on the Taskbar, you don’t … <\/p>\n
Continue reading “JavaFX Undecorated Window Task Icon Minimize”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3,5],"tags":[],"class_list":["post-672","post","type-post","status-publish","format-standard","hentry","category-java","category-javafx"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/choudhury.com\/blog\/wp-json\/wp\/v2\/posts\/672","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/choudhury.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/choudhury.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/choudhury.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/choudhury.com\/blog\/wp-json\/wp\/v2\/comments?post=672"}],"version-history":[{"count":11,"href":"https:\/\/choudhury.com\/blog\/wp-json\/wp\/v2\/posts\/672\/revisions"}],"predecessor-version":[{"id":689,"href":"https:\/\/choudhury.com\/blog\/wp-json\/wp\/v2\/posts\/672\/revisions\/689"}],"wp:attachment":[{"href":"https:\/\/choudhury.com\/blog\/wp-json\/wp\/v2\/media?parent=672"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/choudhury.com\/blog\/wp-json\/wp\/v2\/categories?post=672"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/choudhury.com\/blog\/wp-json\/wp\/v2\/tags?post=672"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"\"](\"https:\/\/choudhury.com\/blog\/wp-content\/uploads\/2017\/02\/minimise_task_icons.jpg\"){kind=icon}
<\/a><\/p>\n