panel

问题 I am trying to open a preview panel: QLPreviewPanel.shared().makeKeyAndOrderFront(self) for a valid QLPreviewItem (url). This works well for regular files, but crashes on folders and some specific urls, for example vnc internet connection files (.vnc). The console error: [Layout] Unable to simultaneously satisfy constraints: ( "", "", "", "", "" ) Will attempt to recover by breaking constraint Set the NSUserDefault NSConstraintBasedLayoutVisualizeMutuallyExclusiveConstraints to YES to have -

问题 I create Form and I add Panel with Autoscroll is true; After than , I Add this code; Int32 _y =0; progressBarX1.Maximum = 600; for (int i = 0; i <= 600;i++ ) { progressBarX1.Value = i; ButtonX _btn = new ButtonX(); _btn.Click += new EventHandler(_btn_Click); _btn.Width = 100; _btn.Visible = true; _btn.Height = 70; _btn.Text = i.ToString(); _btn.Left = 0; _btn.Top = _y; _y += 80; panel1.Controls.Add(_btn); } I run the project, but in Panel I see just 407 button, I can not move down with

问题 I'm using stagewebview > Flash Builder 4.6 I have a stagewebview and I load an url in it. I want to show sometimes a slide panel on top of the stagewebview. I tried it, but the panel is always behind the stagewebview. I know that stagewebview isn't a display object, but does anyone know if there is any way I can do it? Thanks in advance 回答1: I think I have the answer, it's a little trickery but I think it's the only way You need to take a picture of the stagewebview, add the picture to the

问题 I'm trying to concat multiples pandas.DataFrame to be saved in a mongodb in just one collection, all the dataframes have the same index/columns and I wanted to save it, in just one document, using to_json() method. Having all the cells of the dataframe as dicts, its probably a good approach. To accomplish that I wanted to concat the dataframes like this: df1: index A B 1 'A1' 'B1' 2 'A2' 'B2' 3 'A3' 'B3' df2: index A B 1 'a1' 'b1' 2 'a2' 'b2' 3 'a3' 'b3' Expected solution: df_sol: index A B 1

问题 Is there a way to get a event from a Panel when a child is added or removed? I'm deriving from a WrapPanel atm. 回答1: There is no public event or protected override that tracks changes Children membership. However a change in the membership of the Children property will ultimately result in a LayoutUpdated event. If you just need to know if the members have been changed then a simple copy of the last count of children would suffice. However if you need to keep track of which members have been

问题 I have a layering system which uses panels to contain different controls and GDI drawings, but I would like to change the order that they are displayed. I have used the BringToFront() method on the panel, this does bring it to the front, but the controls that I have added to it are still displayed behind the other controls. Is there a way that I can bring these controls up as well? Thanks. EDIT: I should add that these panels are transparent. And I add controls to the panel like panelName

问题 Disclaimer This is a follow-up question from here, where I had a pandas.Panel with several items consisting of pandas.DataFrames . I wanted to plot a certain column in my DataFrame (minor_axis in the Panel ) from each item in only one command, avoiding a code cluster like plt.plot(x, DataFrame1[y1]) plt.plot(x, DataFrame2[y1]) ... It was brought as an answer that I could switch my axes in the Panel so that instead of one item containing all the information of one dataset (of a simulation with

问题 I am making a custom menu. I am applying colors on panels on mouse enter and mouse leave. I have labels on these panels, and the mouse enter and leave events work snappy, but as soon as I hover over the label (on/inside) the panel, the mouse leave event is fired. I know I can just do the same thing for the label mouse enter event, but I am doing some other visual stuff, and I need to have the label mouse events totally disregarded. Any ideas? Thanks in advance. 回答1: I eventually just used the

问题 I'm writing a form in C# and have several panels. I need to draw a line between two of the panels. I've found online several ways to go about this, the most promising appears to be to create a third panel, make it transparent, place it on top of my original panels and draw the line here. I'm not able to get the panel to be transparent, even if I set its BackColor and ForeColor properties to transparent (in code or in design view of VS). Any ideas on how to make the panel itself transparent

问题 When i setSize of a jLabel, normally it grows towards bottom. How can i increase the height in positive y direction ? After pressing init Current Result Expected result My source code private void initActionPerformed(java.awt.event.ActionEvent evt) { int p = Integer.parseInt(abc[0].getText()); int q = Integer.parseInt(abc[1].getText()); int r = Integer.parseInt(abc[2].getText()); int s = Integer.parseInt(abc[3].getText()); int t = Integer.parseInt(abc[4].getText()); one.setSize(20, p*10 );