Difference between revisions of "TEdit"
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==Usage== | ==Usage== | ||
| − | You can your [[TForm | + | You can your [[TForm|Form]] a [[doc:lcl/stdctrls/tedit.html|TEdit]] input box add by clicking on it at the Standard component palette and place it on your form with one click. You can now edit this single-line text box at run time. |
<br> | <br> | ||
Want you this text elsewhere have, you can read this text, like every other [[String]]. | Want you this text elsewhere have, you can read this text, like every other [[String]]. | ||
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* In the Object Inspector set the property PasswordChar of ''Edit1'' to a " * ". | * In the Object Inspector set the property PasswordChar of ''Edit1'' to a " * ". | ||
* In the event handler of ''OnClick'' of ''Button1'' show the entered password: '''<code>ShowMessage(Edit1.Text);</code>''' | * In the event handler of ''OnClick'' of ''Button1'' show the entered password: '''<code>ShowMessage(Edit1.Text);</code>''' | ||
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==Special edit fields== | ==Special edit fields== | ||
Revision as of 22:24, 26 June 2014
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>> LCL Components >> TEdit
This page explains how to use the TEdit component. When I mention to click on something, unless I explicitly say to right-click, you always left-click on the item in question.
Description
A control with a single line of editable text.
Usage
You can your Form a TEdit input box add by clicking on it at the Standard component palette and place it on your form with one click. You can now edit this single-line text box at run time.
Want you this text elsewhere have, you can read this text, like every other String.
For example, you have a TEdit Edit1 on your form placed, you can use myString: = Edit1.Text;. To change the shown Text in Edit1, you can use Edit1.Text := myString;.
If you want to display another text instead of the default text (e.g. Edit1) in a TEdit Edit1 at the start of your application, you can proceed as follows:
- Select the TEdit on your form with one click.
- Go to the properties tab in the Object Inspector.
- Select the property Text and change it in the next input box.
- In the same way, you can select the property Name and give the TEdit a better name.
Password input
You can also easily use a TEdit to enter passwords. It is then instead of actually entered Char a PasswordChar displayed.
Little Example:
- Create a new GUI application with a TEdit Edit1 and a TButton Button1 on the form.
- In the Object Inspector set the property PasswordChar of Edit1 to a " * ".
- In the event handler of OnClick of Button1 show the entered password:
ShowMessage(Edit1.Text);
Special edit fields
TMemo - A multiline text edit box
TLabeledEdit - An edit field like a TEdit with a label
TMaskEdit - An edit field with an edit mask
TSpinEdit - An edit field for integers defined numbers range limits
TFloatSpinEdit - An edit field for tiles floating-point numbers with defined numbers range limits
TEditButton - An edit field like a TEdit with an attached button as a TSpeedButton
TFileNameEdit - An edit field with attached TOpenDialog, to enter a file name
TDirectoryEdit - An edit field with attached TSelectDirectoryDialog, to enter a file path
TDateEdit - An edit field with attached TCalendarDialog (calendar), to enter a date
TCalcEdit - An input field with attached TCalculatorDialog (Calculator), to enter a number
| Return To: LCL Components | — Previous: TLabel | Next: TMemo |
--Michl 09:18, 16 May 2014 (CEST)
