drag

I have a QTreeWidget with what I thought all the proper settings setup in order to be able to reorder items by dragging them around. It can work, at times, but more often than not I drag an item into another one and it either disappears or becomes a child. Is there anyway to prevent this from happening so you don't lose items you're trying to reorder? I figured you could achieve this within Qt Designer. I have dragDrop mode set to InternalMove and defaultDropAction set to MoveAction, but I'm not even certain of both of those are what I need to be adjusting. Thanks in advance! You can add flags

I want to ask how to make frame can not drag when the application is running? And then how to disable maximize, minimize button (title bar)? I'm using JFrame . Just add the below line it removes the window decorations like close maximise and minimise(titlebar). This itself disables the dragging only with mouse events. frame.setUndecorated(true); hoang nguyen You can use a JWindow instead of a JFrame . There is no title bar, so the user won't be able to move it. setResizable(false); setUndecorated(true); getRootPane().setWindowDecorationStyle(JRootPane.PLAIN_DIALOG); 来源： https://stackoverflow

I have a simple JEditorPane inside a JScrollPane that displays line numbers on the left side. It works great except when you move the window off screen and pull it back again, it looks the this when you stop dragging: any ideas? Should I need to be listening for a move/drag event and calling repaint/revalidate somewhere? Thought it might be something obvious, but here is some code. I am using the JSyntaxPane. public EditorPanel() { this.setLayout(new BorderLayout()); PythonSyntaxKit.initKit(); codeEditor = new JEditorPane(); JScrollPane scrPane = new JScrollPane(codeEditor); Dimension d = new

I want to allow a user to drag my Win32 window around only inside the working area of the desktop. In other words, they shouldn't be able to have any part of the window extend outside the monitor(s) nor should the window overlap the taskbar. I'd like to do it in a way that does cause any stuttering. Handling WM_MOVE messages and calling MoveWindow() to reposition the window if it goes off works, but I don't like the flickering effect that's caused by MoveWindow(). I also tried handling WM_MOVING which prevents the need to call MoveWindow() by altering the destination rectangle before the move

I'm trying to do a simple drag script. The idea is to save the position when the mouse is down, update the view while the mouse is moving, and stop when mouse is up. Problem, mouseup event isn't working properly. See the code: var target = $('a') var pos = 0; var dragging = false; $(document).mousedown(function(e) { pos=e.pageX; dragging = true }) $(document).mouseup(function() { dragging = false }) $(document).mousemove(function(e) { if(dragging){ target.css('left', e.pageX-pos); } }) ​ Why mouseup works with a "a" tag: http://jsfiddle.net/leyou/c3TrG/1/ And why mouseup doesn't work with a

日期：2012-4-17 来源： GBin1.com 在线演示 本地下载 今 天我们介绍HTML5的拖拽功能。基本目前所有的现代浏览器(Firefox，Chrome，Safari，或者Opera)都支持这个实用的功能。这意 味着我们可以考虑在我们的项目和网站中使用这个功能。更重要的是代码编写非常简单。我们这里将使用拖拽API开发一个图片的分组排序功能 ，希望能够给大家比较直观的使用感受。希望大家喜欢！ HTML标签 <div class="albums"> <div class="album" id="drop_1" droppable="true"><h2>Album 1</h2></div> <div class="album" id="drop_2" droppable="true"><h2>Album 1</h2></div> <div class="album" id="drop_3" droppable="true"><h2>Album 3</h2></div> </div> <div style="clear:both"></div> <div class="gallery"> <a id="1" draggable="true"><img src="images/1.jpg"></a> <a id="2" draggable="true"><img src=