TPopupNotifier/fr
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TPopupNotifier 
est composant indépendant de la plate-forme 'Ballon d'aide' pour l'affichage de messages pop-up partout sur l'écran. Le composant est construit à partir d'un TForm, pour prendre en charge une icône, un texte d'entête, un texte de message et la colorisation personnalisée. Le composant TPopupNotifier est disponible depuis l'onglet Common Controls de la palette de composants.
Auteurs
Licence
LGPL modifiée comme pour la Lazarus Component Library.
Téléchargement
Peut être trouvé dans votre installation Lazarus dans le répertoire lazarus/component/popupnotifier et disponible depuis Lazarus 0.9.17.
Can be found on your lazarus installation at lazarus/component/popupnotifier directory. It is available on Lazarus 0.9.17 or superior.
Prérequis du système
Fonctionne actuellement dans les environnements graphiques : win32, gtk (obsolète), gtk2 et Qt.
Ne dépend que la Lazarus Component Library (LCL).
Usage
- Drop a TPopupNotifier component on form. Set the icon image, header text and message text and optionally the colour.
- Call TPopupNotifier.Show to show the message, or TPopupNotifer.Hide to hide it.
A note on the implementation
TPopupNotifier uses a wrapper component so that the TForm is not embedded into your application form. The actual data types behind it are:
- Icon: TPicture, mapped to a TImage
- Header: TLabel ( sets +FsBold automatically)
- Message: TLabel sized to show multiline messages
The close button is a custom canvas drawn component (there were good reasons we did this).
More advanced features
- Apart from these basics, you can use any of the methods from the above datatypes to manipulate messages. For example you can call TPopupNotifier.Icon.LoadFromFile;
- TPopupNotifier has a visible property, which can be used to check if the form is currently shown or not, setting it's value will also hide/show the form as appropriate.
- TPopupNotifier generates an OnClose event when the form is closed, whether by you or the user, this is useful if you wish something to happen as soon as the form is closed. Clicking anywhere on the form has the same close effect as clicking the close-button itself.
Showing multiline messages
This code demonstrates the right way to show a multiline message (in this case from a TStringList).
var
I : Integer;
Lines : TStringListç
...
for I := 0 to Lines.Count - 1 do
PopupNotifier1.Text := PopupNotifier1.Text + LineEnding + Lines[I];Programme de démo
There is a small demo program in the components/popupnotifier/demo directory, though simple it shows off nearly all the standard features.
