combobox | 易学教程

Multiple Colors for Each Item in JComboBox

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问题 I'm trying to make a ComboBox that uses different colors for different items. I wrote out some test code but it doesn't seem to work. Adding in the renderer causes the program to crash but commenting it out makes the box display on in the frame. Is there anything I'm missing or am I doing this the wrong way? I tried using the custom ComboBox Renderer tutorial as an example. Here is my code: TestComboColor.java import java.awt.Color; import javax.swing.JComboBox; import javax.swing.JFrame;

自定义控件之 Combobox

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var ComboboxObj = function (id, url) { this.URL = url; //Ajax url this.ID = id; //combobox id this.method = 'get'; //Ajax type "POST" or "GET" this.width = 250; //combobox width this.height = 22; //combobox height this.selectValue = ""; //combobox selected value this.selectText = "";//combobox selected text this.selectIndex = 0;//combobox selected index this.initValue = ""; //combbobox initial value this.valueField = "ID"; //combobox value field this.textField = "Name"; //combobox text field this.enable = true; //combobox enable or disable this.source = new Object(); } //Set combobox width

I am trying to understand gridpane and how to use it with combobox, and VBox/HBox

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问题 I have a more simpler program that just shows the name and the address. I am playing around with place in the gridpane to put these things. Eventually, I would like a combobox , and a clockAnimation in the gridpane. I really don't know how to use HBox/VBox within gridpane, and if I can use them and label and text together. What I am trying to do is put a combo box in the middle of the gridpane, and a clock on the right. I would like to use the the gridpane, and HBox and VBox. I just don't

Filtering Multiple Combobox VB.NET

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问题 I am creating a "Voting system" and i have problem on the ballot form. Every time i choose candidate in my combobox, the rest of the combobox will also change. here is my ballot form.. and when i choose my President candidate in my combobox1 this what happens.. I guess its because of my 'Candidate' table?? My issue here is how can i filter combobox1 like for example... listing All "president candidate on my combobox1. without affecting other comboboxes. PLEASE HELP Im a student and my Thesis

How to style RibbonComboBox

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问题 I have described my problems with binding the SelectedItem of the RibbonComboBox. Another very ugly issue arises when trying to style this control. Starting with the unstyled ComboBox from the post mentioned above: <r:RibbonComboBox > <r:RibbonGallery SelectedItem="{Binding SelectedItem, Mode=TwoWay}"> <r:RibbonGalleryCategory ItemsSource="{Binding Controls}" DisplayMemberPath="Caption" /> </r:RibbonGallery> </r:RibbonComboBox> I get the expected result: But when applying a style with the

How to get selected index from selected value in combo box C#

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问题 Is there any built-in method for getting selected index from selected value in ComboBox control C#. If not, how can I built my own one Thanks in advance 回答1: I think you're looking for the SelectedIndex property. int index = comboref.SelectedIndex As you're looking for the index of a specific value not the selected one you can do int index = comboref.Items.IndexOf("string"); and it will tell you which Index has "string" on the combobox 回答2: You can use combobox1.Items.IndexOf("string") which

How to make drop-down menu appear over a combobox in IE6?

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问题 I'm facing a problem in IE6 : My website contains a drop-down menu and some pages contains comboboxes. When I roll-out a menu and it's covering a combobox, the combobox always appears over the menu ! My website is to be used exclusively on IE6, so I want to solve this problem on IE6 and make the drop-down menu apprear OVER the combobox in such situations. Here is a code snippet that illustrates the problem : <html> <body>  <table width="20%" border="0" style="position:relative; z

Why do Items from one comboBox not copy to another?

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问题 I have multiple comboboxes on a tabpage on a tabcontrol on a form. Trying to loop through the controls has not worked (see this). So, I tried to go at it from another angle: finding the controls based on their name. As an initial POC, I just wanted to brute force it by providing the name of one of the combo boxes that is empty at design time ("cmbxRow0Element1") and assign the items from cmbxRow0Element0 to it. But both this attempt: Control ctrl = this.Controls["cmbxRow0Element1"]; ComboBox

compare the items in list in c#

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问题 i want to compare the selecteditem of combobox with the selecteditem of other combobox for this i have registered all the comboboxes in a list and named it "panel1kilist" now the problem i am facing is that when there are same items in two comboboxes first the messagebox shows "no mattch found" and then it shows "match found" actually it goes to the else statement of inner loop first and then to if statement kindly help private void button1_Click(object sender, EventArgs e) { bool check =

Refreshing a column of comboboxes in a table view, javafx

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问题 so i have a table view with 3 columns and one of them is a column of comboboxes, the way i create the column of combobox is as so Source = new TableColumn<>("Configure Interface as.."); Source.setCellValueFactory(i -> { final StringProperty value = i.getValue().optionProperty(); // binding to constant value return Bindings.createObjectBinding(() -> value); }); Source.setCellFactory(col -> { TableCell<TableViewTest, StringProperty> c = new TableCell<>(); ComboBox<String> comboBox = new