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You can show a Help Button at title-bar of a Form. To do so, you should: Set HelpButton property of form to true. Set MinimizeBox and MaximizeBox to false. Then a help button will appear on title-bar of Form: Also when you click on Help button, the cursor will be changed to a ? cursor: ...

If you have a Form with MinimizeBox and MaximizeBox set to true, then you can not show Help button on title-bar of Form and will lose the feature of click on help button to convert it to help cursor to be able to click on controls to show help. You can make a menu item on MenuStrip act like standar...

You can detect when a user Clicked on a HelpButton on title-bar of form by handling HelpButtonClicked. You can let the event continue or cancel it by setting Cancel property of its event args to true. private void Form1_HelpButtonClicked(object sender, CancelEventArgs e) { e.Cancel = true; ...

You can create a set of radio buttons used to select an item from a list. It's possible to change the settings : selected : The initially selected value (character(0) for no selection) inline : horizontal or vertical width It is also possible to add HTML. library(shiny) ui <- fluidPa...

The protected internal keyword marks field, methods, properties and nested classes for use inside the same assembly or derived classes in another assembly: Assembly 1 public class Foo { public string MyPublicProperty { get; set; } protected internal string MyProtectedInternalPropert...

Below is a recursive code to reverse a string /** * Just a snippet to explain the idea of recursion * **/ public class Reverse { public static void main (String args[]) { String string = "hello world"; System.out.println(reverse(string)); //prints dlrow oll...

SELECT * FROM Cars WHERE status IN ( 'Waiting', 'Working' ) This is semantically equivalent to SELECT * FROM Cars WHERE ( status = 'Waiting' OR status = 'Working' ) i.e. value IN ( <value list> ) is a shorthand for disjunction (logical OR).

Default behavior when cloning an object is to perform a shallow copy of the object's fields. In that case, both the original object and the cloned object, hold references to the same objects. This example shows that behavior. import java.util.List; public class Sheep implements Cloneable { ...

To copy nested objects, a deep copy must be performed, as shown in this example. import java.util.ArrayList; import java.util.List; public class Sheep implements Cloneable { private String name; private int weight; private List<Sheep> children; public Sheep(Str...

Custom Fonts for UI components from storyboard can be easily achieved with User Defined Runtime Attributes in storyboard and Categories. The advantages are like, No need to define outlets for the ui element No need to set font for elements programatically. Steps to follow Font File: A...

Exceptions represent programmer-level bugs like trying to access an array element that doesn’t exist. Errors are user-level issues like trying load a file that doesn’t exist. Because errors are expected during the normal execution of a program. Example: NSArray *inventory = @[@"Sam"...

Before we download and install Composer, we need to make sure our server has all dependencies installed. First, update the package manager cache by running: sudo apt-get update Now, let's install the dependencies. We'll need curl in order to download Composer and php5-cli for installing and run...

Here we will simply use the installer. This is the easiest way to get Composer set up on your machine. Download and run Composer-Setup.exe. It will install the latest composer version and set up your PATH so that you can just call composer from any directory in your command line. Note: Close your...

Using raw values directly from the accelerometer sensor to move or rotate a GameObject can cause problems such as jerky movements or vibrations. It is recommended to smooth out the values before using them. In fact, values from the accelerometer sensor should always be smoothed out before use. This ...

First make utility class or use this method in class needed public class UIUtils { public static BitmapImageViewTarget getRoundedImageTarget(@NonNull final Context context, @NonNull final ImageView imageView, final float radius) { retur...

The following examples will use this class hierarchy: struct A { int m; }; struct B : A {}; struct C : B {}; The conversion from derived class type to base class type is preferred to user-defined conversions. This applies when passing by value or by reference, as well as when converting pointe...

To create a simple variable and assign it to a value or string use the SET command: SET var=10 Here, the code declares a new variable var with a value of 10. By default all variables are stored internally as strings; this means that the value 10 is no different to foo1234 or Hello, World! Notes...

echo %var% This code will echo the value of var If setLocal EnableDelayedExpansion is used, the following will echo the value of var (the standard expression %var% will not work in that context). echo !var! In batch files, variables can be used in any context, including as parts of commands ...

Warning: The functions atoi, atol, atoll and atof are inherently unsafe, because: If the value of the result cannot be represented, the behavior is undefined. (7.20.1p1) #include <stdio.h> #include <stdlib.h> int main(int argc, char** argv) { int val; if (argc < 2) ...

The contents of files and network messages may represent encoded characters. They often need to be converted to unicode for proper display. In Python 2, you may need to convert str data to Unicode characters. The default ('', "", etc.) is an ASCII string, with any values outside of ASCII ...