custom-controls

问题 Say I have a custom GTK+ widget obtained from a third party library. It has an accelerator, e.g it hides itself when I press 'h' or click it, and shows itself when I press 'h' again or double-click it. I want disable this particular functionality of the GTK+ widget. How can I do this without changing the source code of the Library and rebuilding it? Note: You can also give your solution in c++ , in fact it would be better that way because I am using C++ for my project. 回答1: I'm guessing now,

问题 What are the differences between User Control and Custom Control in ASP.NET 回答1: AFAIK, user controls are controls that you can create out of existing controls and can be part of the project and have a designer surface for you to drag/drop. Custom controls are generally external to the project & would require to be hand-coded (using various asp.net control events & html building in the code). 回答2: User Controls are inherit from UserControl class by system default and can combine controls in

问题 I notice that in iOS5 we can custom UIKit control by UIAppearance and I start to use it. I'd like to use appearanceWhenContainedIn: to custom the UINavigationBar 's tintColor in different class, for example: [[UINavigationBar appearanceWhenContainedIn:[A class], nil] setTintColor:[UIColor greenColor]]; [[UINavigationBar appearanceWhenContainedIn:[B class], nil] setTintColor:[UIColor redColor]]; However, it totally doesn't work. And I tried to add property in Class A/B like: @property (strong,

问题 MacOS 10.14 (Mojave) features a Dark interface style, and user selectable color accents. How to read these values and listen for changes? 回答1: This is stored in the system defaults, available through NSDistributedNotificationCenter . Dark mode is active when AppleInterfaceStyle is set to Dark . Changes can be observed by listening for the InterfaceStyleChanged notification. The accent color can be read from AppleAccentColor . Changes can be observed by listening for the

问题 I want to make a custom control in my website (note: not web application) Following is the code using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.ComponentModel; using System.Web.UI; using System.Web.UI.WebControls; namespace AnkitControls { /// <summary> /// Summary description for CustomTreeView /// </summary> public class CustomTreeViewControl : WebControl { } } Default.aspx : <%@ Page Title="Home Page" Language="C#" MasterPageFile="~/Site

问题 here is my app. how to add table view or grids in the following. should i draw every thing plz help this is my code import net.rim.device.api.ui.*; import net.rim.device.api.ui.component.*; import net.rim.device.api.ui.container.*; import net.rim.device.api.system.*; import net.rim.device.api.util.*; import java.util.*; /*An application in which user enters the data. this data is displayed when user press the save button*/ public class Display extends UiApplication { /*declaring Strings to

问题 I am trying to create a semi-transparent control derived from System.Windows.Forms.Panel . [Edit: Basically what I want to achieve is this]: I have gone through numerous web articles as well as SO questions and have come up with this: class SeeThroughPanel : Panel { public SeeThroughPanel() { } protected override CreateParams CreateParams { get { var cp = base.CreateParams; cp.ExStyle |= 0x00000020; return cp; } } protected override void OnPaint(PaintEventArgs e) { //base.OnPaint(e); e

问题 Let's say I have subclassed the default TableView<T> class provided by javafx and created a class PersonTableView extends TableView<Person> . That subclass exists in java code and does not use fxml at all. It defines and encapsulates behaviour that I need specifically for my Person object. Now I want to use an instance of my custom class inside of an fxml file, just like I would use all the default controls. And that exactly is my problem, I don't know how I can do that, or if this is even a

问题 This is how it looks like right now: and this is how I'd like to have it: As shown the tiles should be apposed as densely as possible with only a set margin between them. And here's my code: <Grid Background="Gray"> <TextBox x:Name="BoardNameTextBox" HorizontalAlignment="Left" Height="23" Margin="40,3,0,0" TextWrapping="Wrap" Text="pol" VerticalAlignment="Top" Width="120"/> <Button Content="Button" HorizontalAlignment="Left" Margin="491,3,0,0" VerticalAlignment="Top" Width="75" Click="Button

问题 I want to design a custom items control panel for a ListBox . There are 3 requirements: It should have the properties int rows and int columns which would define the matrix of cells that the panel is made of. This is what the panel should look like (colors are irrelevant, I just wanted to show that the panel is consisted of 12 empty cells in a 3x4 matrix): If the number of items in the items control is less than the number of defined cells all the cells should be drawn. E.g. if there are only