Difference between revisions of "Howto Use TOpenDialog"
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{{Howto Use TOpenDialog}} | {{Howto Use TOpenDialog}} | ||
| − | Simple and short | + | Simple and short guidelines: |
| − | + | ||
| − | + | 1. Place a [[TOpenDialog]] widget [[image:topendialog.png]] on your [[TForm|form]]. It can be placed anywhere on your form as it is not visible during program [[runtime|run time]] but only during design time. | |
| + | |||
| + | [[Image:Component_Palette_Dialogs.png]] | ||
| + | |||
| + | It is located in the [[Dialogs tab]] of the [[Component Palette|component palette]] and is the leftmost component. | ||
| + | |||
| + | 2. In your code write something similar to: | ||
<syntaxhighlight lang="pascal"> | <syntaxhighlight lang="pascal"> | ||
| − | |||
| − | |||
| − | |||
if OpenDialog1.Execute then | if OpenDialog1.Execute then | ||
| − | begin | + | begin |
| − | + | if fileExists(OpenDialog1.Filename) then | |
| − | + | ShowMessage(OpenDialog1.Filename); | |
| − | end; | + | end |
| + | else | ||
| + | ShowMessage('No file selected'); | ||
</syntaxhighlight> | </syntaxhighlight> | ||
| − | The [[doc:lcl/dialogs/tcommondialog.execute.html | Execute]] [[Method|method]] displays the file open dialog. It returns [[True|true]] when user has selected a file, [[False|false]] when user has aborted. | + | The dialog [[doc:lcl/dialogs/tcommondialog.execute.html | Execute]] [[Method|method]] displays the file open dialog. It returns [[True|true]] when user has selected a file, [[False|false]] when user has aborted. |
| − | The [[doc:lcl/dialogs/tfiledialog.filename.html | Filename]] [[Property|property]] returns the full filename including drive and path. | + | The dialog [[doc:lcl/dialogs/tfiledialog.filename.html | Filename]] [[Property|property]] returns the full filename including drive and path. |
{{Note|This control only collects the filename. It does not actually open the file. Your code must do that.}} | {{Note|This control only collects the filename. It does not actually open the file. Your code must do that.}} | ||
| + | |||
== See also == | == See also == | ||
| + | |||
* [[Howto Use TSaveDialog]] | * [[Howto Use TSaveDialog]] | ||
* [[CopyFile]] | * [[CopyFile]] | ||
Latest revision as of 07:07, 27 March 2021
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Simple and short guidelines:
1. Place a TOpenDialog widget 
on your form. It can be placed anywhere on your form as it is not visible during program run time but only during design time.
It is located in the Dialogs tab of the component palette and is the leftmost component.
2. In your code write something similar to:
if OpenDialog1.Execute then
begin
if fileExists(OpenDialog1.Filename) then
ShowMessage(OpenDialog1.Filename);
end
else
ShowMessage('No file selected');
The dialog Execute method displays the file open dialog. It returns true when user has selected a file, false when user has aborted.
The dialog Filename property returns the full filename including drive and path.
Note: This control only collects the filename. It does not actually open the file. Your code must do that.