About: Creating Component Templates

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This article on delphi.about.com gives a quick description on how to create component templates but doesn't really tell why it helps you. Component templates are a way to quickly create a modified version of a standard component without writing any code. Let's assume you write lots of dialogs which contain an OK and a Cancel button (and who doesn't?). Now, doing it the classic way, you would have to do the following for each of these dialogs: Now, if you had a component template for an OK button, you could reduce this list to only step 1. To create a component template for an OK button

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rdfs:label	Creating Component Templates
rdfs:comment	This article on delphi.about.com gives a quick description on how to create component templates but doesn't really tell why it helps you. Component templates are a way to quickly create a modified version of a standard component without writing any code. Let's assume you write lots of dialogs which contain an OK and a Cancel button (and who doesn't?). Now, doing it the classic way, you would have to do the following for each of these dialogs: Now, if you had a component template for an OK button, you could reduce this list to only step 1. To create a component template for an OK button
dcterms:subject	Examples
abstract	This article on delphi.about.com gives a quick description on how to create component templates but doesn't really tell why it helps you. Component templates are a way to quickly create a modified version of a standard component without writing any code. Let's assume you write lots of dialogs which contain an OK and a Cancel button (and who doesn't?). Now, doing it the classic way, you would have to do the following for each of these dialogs: 1. * Add a TButton from the component palette to your form 2. * Change its caption to "OK" 3. * Change its name to "b_OK" (or whatever your usual name for the OK button is) 4. * Change its Default property to true Now, if you had a component template for an OK button, you could reduce this list to only step 1. To create a component template for an OK button 1. * Follow the steps above to create the OK button on a form 2. * In the "Component" menu select "Create Component Template" 3. * Give it the name TOkButton (or whatever you prefer) 4. * Enter the name of the palette page on which you want your template to appear (default: Templates) 5. * Press OK Now, remove your button from the form, switch to the palette page you just specified and, voila there is a TOkButton component. If you drop that component on your form, you will find, that it adds a preconfigured OK-Button. The same goes for the Cancel button: 1. * Add a TButton from the component palette to your form 2. * Change its caption to "Cancel" 3. * Change its name to "b_Cancel" 4. * Change its Cancel property to true Now, just create a similar TCancelButton component template and with dropping two components on a form you get a dialog with a default OK button and a Cancel button that is pressed using the Esc key. But we can do even better: What about adding both buttons at once? This is also possible because a component template also allows multiple components in a single template: 1. * Drop a TOkButton and a TCancelButton on your form 2. * Arrange them to your liking 3. * Select both and create a new component template TOkCancelButtons for them Now you can add an OK and a Cancel button with just dropping one TOkCancelButton on your form. Is this cool or what? Of course you are not limited to buttons. You could for example create a labeled edit (but later Delphi versions already provide a TLabeledEdit component) or a labeled memo, e.g. TResultMemo for displaying the output of your program.

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