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-->  <!DOCTYPE concept PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd"><concept id="GUID-1AA32C40-CDE0-4627-A634-7C07BB1ED67B" xml:lang="en"><title>Forms</title><prolog><metadata><keywords></keywords></metadata></prolog><conbody>

<p>A form is a specific kind of selection list, where all items (fields) have

some editable content.</p>

<p>A form can be in the View state or in the Edit state. The item layouts

and functionality are different in these states:</p>

<ul>

<li><p>In the View state, the items are not editable. The form functions and

looks exactly like a similar selection list. Items can be selected to perform

an application-specific function. </p></li>

<li><p>In the Edit state, the user can edit all the fields. Forms can contain

text fields (alphanumeric or numeric content), pop-up fields and sliders.</p><p></p></li>

</ul>

<p>The user can switch from the View state to the Edit state using the Edit

command in the Options menu.In the Edit state, the contents of the form can

be accepted using the right softkey labeled as Done. The form then returns

to the View state.</p>

<section><title>Using forms in C++ applications</title><p>The

API to use for creating forms is the Form

API. For implementation information, see Using

the Form API.</p><p>Typically, a form will be derived from the class <xref href="jar:GUID-759FBC7F-5384-4487-8457-A8D4B76F6AA6.jar!/html/classCAknForm.html" format="application/java-archive"><codeph>CAknForm</codeph></xref> and

the methods <xref href="jar:GUID-759FBC7F-5384-4487-8457-A8D4B76F6AA6.jar!/html/classCAknForm.html#b90bd30d42503d5f0464e9ff1ce3b830" format="application/java-archive"><codeph>SaveFormDataL()</codeph></xref> and <xref href="jar:GUID-759FBC7F-5384-4487-8457-A8D4B76F6AA6.jar!/html/classCAknForm.html#6ff9f54d5d8a08da0c6f6574389b787a" format="application/java-archive"><codeph>DoNotSaveFormData()</codeph></xref> will be implemented by the developer. These are called when users

switch from edit mode to view mode and are prompted by the form as to whether

they wish to save their modifications.</p><p>For customization, the class <codeph>CAknForm</codeph> provides

a single-line or double-line layout and it is possible to use icons on forms. </p><p>In

the following example, the form is pushed on the cleanup stack before <xref href="jar:GUID-759FBC7F-5384-4487-8457-A8D4B76F6AA6.jar!/html/classCAknForm.html#a7108b30a367ecb940f57e0dd35973bd" format="application/java-archive"><codeph>ConstructL()</codeph></xref> (a

potentially leaving method) is called, and popped off before <xref href="jar:GUID-759FBC7F-5384-4487-8457-A8D4B76F6AA6.jar!/html/classCAknDialog.html#2bb826c038d23806445872d768e7d151" format="application/java-archive"><codeph>ExecuteLD()</codeph></xref>. </p><codeblock xml:space="preserve">CAknExFormAdd* form = new(ELeave) CAknExFormAdd;

CleanupStack::PushL(form);

form->ConstructL();

CleanupStack::Pop();

form->ExecuteLD(R_AKNEXFORM_TEXT_FIELD_DIALOG);

</codeblock></section>

</conbody></concept>