LayoutBounds attached property of each child, using absolute values or proportional values. Absolute and proportional values can be mixed for children when the position should scale, but the size should stay fixed, or vice versa. For information about absolute values, see Absolute positioning and sizing. For information about proportional values, see Proportional positioning and sizing.
The AbsoluteLayout. LayoutBounds attached property can be set using two formats, regardless of whether absolute or proportional values are used:. AutoSize property. However, overuse of this property can harm application performance, as it causes the layout engine to perform additional layout calculations.
By default, an AbsoluteLayout positions and sizes children using absolute values, specified in device-independent units, which explicitly define where children should be placed in the layout. This is achieved by adding children to the Children collection of an AbsoluteLayout and setting the AbsoluteLayout. Using absolute values for positioning and sizing children can be problematic, because different devices have different screen sizes and resolutions.
Therefore, the coordinates for the center of the screen on one device may be offset on other devices. In this example, the position of each BoxView object is defined using the first two absolute values that are specified in the AbsoluteLayout. LayoutBounds attached property. The size of each BoxView is defined using the third and forth values. The position of the Label object is defined using the two absolute values that are specified in the AbsoluteLayout.
Size values are not specified for the Label , and so it's unconstrained and sizes itself. In all cases, the absolute values represent device-independent units.
In this example, the position and size of each BoxView is defined using a Rectangle object. The position of the Label is defined using a Point object. In C , it's also possible to set the position and size of a child of an AbsoluteLayout after it has been added to the Children collection, using the AbsoluteLayout.
SetLayoutBounds method. The first argument to this method is the child, and the second is a Rectangle object. An AbsoluteLayout that uses absolute values can position and size children so that they don't fit within the bounds of the layout.
An AbsoluteLayout can position and size children using proportional values. This is achieved by adding children to the Children collection of the AbsoluteLayout , and by setting the AbsoluteLayout. Position and size values are made proportional by setting the AbsoluteLayout. LayoutFlags attached property on each child. LayoutFlags attached property, of type AbsoluteLayoutFlags , allows you to set a flag that indicates that the layout bounds position and size values for a child are proportional to the size of the AbsoluteLayout.
When laying out a child, AbsoluteLayout scales the position and size values appropriately, to any device size. The AbsoluteLayoutFlags enumeration defines the following members:. The AbsoluteLayoutFlags enumeration is a Flags enumeration, which means that enumeration members can be combined.
For example, if you use the SizeProportional flag and set the width of a child to 0. The PositionProportional flag is similar.
A position of 0,0 puts the child in the upper-left corner, while a position of 1,1 puts the child in the lower-right corner, and a position of 0. In this example, each child is positioned using proportional values but sized using absolute values.
This is accomplished by setting the AbsoluteLayout. AbsoluteConstraints , , , 70 ; getContentPane. LookAndFeelInfo info : javax. JLabel jLabel1; private javax. Improve this question. Zayn Jutt Zayn Jutt 37 11 11 bronze badges. AbsoluteLayout is not a standard library included in the JRE, it's an external library added by netbeans, which "should" be included in the lib directory with the jar file when it's built.
In order to run the jar, you will need to be in the same directory as the lib directory and the jar file they need to be kept together — MadProgrammer. Add a comment. Active Oldest Votes.
I made a Netbeans project out of your files and everything works ok. Here are the steps. See more here Differences between "java -cp" and "java -jar"? Improve this answer. Miroslav Todorov Miroslav Todorov 73 7 7 bronze badges. So i manually created a 'lib' folder and pasted the absoluteLayout.
App Run Exception in thread "main" java. ClassNotFoundException: org. AbsoluteLayout at java. App " this happened " Error: Could not find or load main class app. App Caused by: java. ClassNotFoundException: app. App " — Zayn Jutt. Note: I have selected app. App as my main class in project properties and the library is there in the lib folder.
Show 1 more comment. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Stack Gives Back Safety in numbers: crowdsourcing data on nefarious IP addresses.
Featured on Meta.
0コメント