Property classes in Oracle Developer can be ambagious if you try and apprehend Oracle’s bleared description of them in the online documentation. Afterwards the description is rephrased or an archetype is given, however, they become actual accessible to understand. Columnist Matthew Bennett gives an archetype in this article.
This evening, I am allowance my babe accomplishment her algebra homework, and am afraid at how she thinks article so accessible can be so difficult. Back I rephrased some of the questions, she anon saw their solutions. Acreage classes in Anatomy Builder, a allotment of Oracle Developer, can be the aforementioned way. If you try and apprehend Oracle’s bleared description of them in the online documentation, you ability not accept how they can advice you. However, afterwards the description is rephrased or an archetype given, they become actual accessible to understand.
In allowance my babe with her homework, I had the best success back I acclimated an example. Rather than accomplishing article complicated with Anatomy Builder, let’s alpha with a brace of shapes. Figure 1 shows a red aboveboard and a blooming amphitheater that we will be application in the example.
Figure 1 Red aboveboard and blooming amphitheater in Forms Developer to advice authenticate acreage classes.
Now, you appetite to actualize a acreage chic that consists of the background blush property. This is done by afterward these steps:
Click on one of the two appearance altar in the Layout Editor (that’s the window that holds the shapes area you can see them).
Make abiding the Acreage Palette is open. If not, accessible it by beat on the Tools, Acreage Palette card account in the Layout Editor menu.
Select the Accomplishments Blush Acreage in the Acreage Palette.
Create a acreage chic by beat on the Acreage Chic figure (the fifth figure to the appropriate in the Acreage Palette’s toolbar).
You will see a chat box, adage Anatomy Builder is creating a new property class. You can again see the chic in the article navigator (the third window not yet mentioned).
Select the anew created acreage chic begin in the article navigator window (you may accept to aggrandize the Acreage Classes hierarchical tree).
Now attending in the Acreage Palette; you accept your acreage chic with some acquired name. Change the name acreage to SHAPE_CLASS.
Now the chic name is added descriptive.
You accept created a acreage class. Now you appetite both shapes on the anatomy to acquire their accomplishments colors from the SHAPE_CLASS. Select the red aboveboard in the Layout Editor. Under the General area is a acreage alleged Subclass Information. If you bang on it, the acreage amount has a Added on. Bang the on, and you see a Subclass Information chat box. Notice that the Article advantage is selected. What you absolutely appetite to appear is accept the Acreage Chic advantage selected, which changes some of the chat box pull-down account choices. Choose SHAPE_CLASS from the Acreage Chic Name pull-down list, as apparent in Figure 2. You can aish the chat box by beat the OK on.
Figure 2 Subclass Information chat box acclimated to accessory acreage classes with anatomy objects.
Now acquire the accomplishments blush for the blooming amphitheater from the SHAPE_CLASS application the aforementioned accomplish declared previously. Back you are done, the blooming amphitheater should now be a red circle, as apparent in Figure 3.
Figure 3 Aboveboard and amphitheater in Forms Developer that are now accepting the accomplishments acreage amount from a acreage class.
Now, if you appetite to change the accomplishments blush for both appearance objects, you alone charge to accomplish the change in one place: the SHAPE_CLASS background blush property.
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