Q_invokable Public Slot
- Q_invokable Vs Public Slot
- Q Invocable Public Slot Machine
- Q Invocable Public Slot Machines
- Q Invocable Public Slot Poker
- Q Invocable Public Slot Wins
Pdf Redening on Qt. Contribute to paulovap/qtpdfium development by creating an account on GitHub. . GNU General Public License Usage. Alternatively, this file may be used under the terms of the GNU. General Public License version 3.0 as published by the Free Software. Foundation and appearing in the file LICENSE.GPL included in the. packaging of this file. Detailed Description. The QObject class is the base class of all Qt objects. QObject is the heart of the Qt Object Model.The central feature in this model is a very powerful mechanism for seamless object communication called signals and slots. Yes, you have to mark your function of a QObject with QINVOKABLE unless it's a public slot in order to be able to call it from QML. Both QINVOKABLE and the slots keyword register your function with Qt meta-system. The difference is that with QINVOKABLE you can return values.
Since: BlackBerry 10.0.0
To link against this class, add the following line to your .pro file: LIBS += -lbbsystem
A message displayed to the user that does not usually require user interaction to be dismissed.
The toast is dismissed after a predefined timeout period lapses. If the toast includes a button, then the timeout period is activated with the first user interaction, for example, user touching the screen. During this time, if a button is displayed, the user can select it.
Presentation properties are marked as such, and affect future requests. Any pending requests will use the values of the presentation properties at the time of the request.
When the toast is displayed after a call to show() or exec(), there are two methods for updating the toast after changing its presentation properties.
The default method is to update all the necessary presentation properties and call the update() method. This guarantees that all the presentation properties are updated at the same time.
The second method is to have the toast update automatically after every presentation property change. To enable these automatic updates, the autoUpdateEnabled property must be set to true.
The second method does not guarantee automatic updates for all the presentation properties changes. This method can lead to noticeable delays between updates of individual properties. If more than one property needs to be updated, use the first method. If only one presentation property is being updated frequently (for example, the text on the toast body must be updated to notify the user of the application's current status) the second approach can be used.
Overview
| bool | autoUpdateEnabled |
| QString | body |
| bb::system::SystemUiButton | button [read-only] |
| bb::system::SystemUiError::Type | error [read-only] |
| QUrl | icon |
| bb::system::SystemUiModality::Type | modality |
| bb::system::SystemUiPosition::Type | position |
| bb::system::SystemUiResult::Type | result [read-only] |
| SystemToast(QObject *parent=0) | |
| virtual | ~SystemToast() |
| QString | body() const |
| SystemUiButton * | button() |
| Q_INVOKABLE bb::system::SystemUiButton * | buttonSelection() const |
| bb::system::SystemUiError::Type | error() const |
| QUrl | icon() const |
| bool | isAutoUpdateEnabled() const |
| bb::system::SystemUiModality::Type | modality() const |
| bb::system::SystemUiPosition::Type | position() const |
| Q_INVOKABLE void | resetAutoUpdateEnabled() |
| Q_INVOKABLE void | resetBody() |
| Q_INVOKABLE void | resetButton() |
| Q_INVOKABLE void | resetIcon() |
| Q_INVOKABLE void | resetModality() |
| Q_INVOKABLE void | resetPosition() |
| bb::system::SystemUiResult::Type | result() const |
| void | setAutoUpdateEnabled(bool update) |
| void | setBody(const QString &body) |
| void | setIcon(const QUrl &icon) |
| void | setModality(bb::system::SystemUiModality::Type newModality) |
| void | setPosition(bb::system::SystemUiPosition::Type newPosition) |
| void | cancel() |
| bb::system::SystemUiResult::Type | exec() |
| void | show() |
| void | update() |
| void | autoUpdateEnabledChanged(bool value) |
| void | bodyChanged(const QString &value) |
| void | finished(bb::system::SystemUiResult::Type value) |
| void | iconChanged(const QUrl &value) |
| void | modalityChanged(bb::system::SystemUiModality::Type newModality) |
| void | positionChanged(bb::system::SystemUiPosition::Type value) |
bool
Indicates whether the toast is updated every time a presentation property is changed.
Note:The behavior of the autoUpdateEnabled flag is apparent when multiple presentation properties are changed. When autoUpdateEnabled is set to true, the on-screen toast may be updated after each individual presentation property is changed. This may not be an ideal user experience, particularly as the number of changed presentation properties increases. When autoUpdateEnabled is set to false, it is possible to combine multiple presentation property updates and apply them to the on-screen toast as one request by calling show().
QString
This is a presentation property whose default value is a default-constructed QString.
bb::system::SystemUiButton
Represents the button that can be included in the toast.
This is a presentation property whose default bb::system::SystemUiButton::label property is a default-constructed QString.
Note:The button is always shown as enabled. This button is omitted if its bb::system::SystemUiButton::label property is a default-constructed QString.
bb::system::SystemUiError::Type
This property is only valid when SystemToast::result is bb::system::SystemUiResult::Error. See also:bb::system::SystemUiError for the list of possible errors.
QUrl
Represents the path to an image file that can be included in the toast.
This is a presentation property whose default value is a default-constructed QUrl.
bb::system::SystemUiModality::Type
This is a presentation property whose value is bb::system::SystemUiModality::Application. See also:bb::system::SystemUiModality for the list of valid values.
Note:Toasts are non-modal. Modality refers to the scope of the toast.
bb::system::SystemUiPosition::Type
Represents the position of the toast on the display.
This is a presentation property whose default value is bb::system::SystemUiPosition::MiddleCenter. See also:bb::system::SystemUiPosition for a list of possible values.
bb::system::SystemUiResult::Type
Represents the result of the last completed request.
To obtain result values once the request is finished, use the following functions:result() - the result of the request
error() - the error that occurred during the request (if applicable)
buttonSelection() - the button selected (if applicable)
bb::system::SystemUiResult for the list of possible results.
| Parameters | |
|---|---|
| parent | If not 0, the supplied parent is responsible for deleting this instance. |
virtual
Destructor.
QString
Since:BlackBerry 10.0.0
SystemUiButton *
This instance retains ownership of the returned value. Since:BlackBerry 10.0.0
Q_INVOKABLE bb::system::SystemUiButton *
Returns the button that was selected when a button selection is made.
If no button has been selected, 0 is returned. This can occur when the toast timeout expires.
This function returns the result of the button selection of show() and exec().
The return value is reset when a new request is made.
This instance retains ownership of the returned value. Since:BlackBerry 10.0.0
bb::system::SystemUiError::Type
Retrieves the error that occurred during the request.
The return value is reset when a new request is made. See also:bb::system::SystemUiError for the list of possible errors.
Since:
BlackBerry 10.0.0
QUrl
Since:BlackBerry 10.0.0
bool
Retrieves the flag indicating if the toast is updated every time the value of a presentation property is changed.
Return:true if the toast automatically updates, false if the toast doesn't update (in which case the show() method must be called after updating the toast presentation properties).
bb::system::SystemUiModality::Type
See also:bb::system::SystemUiModality for the list of possible values.
Since:BlackBerry 10.0.0
bb::system::SystemUiPosition::Type
See also:bb::system::SystemUiPosition for the list of valid positions.
Since:BlackBerry 10.0.0
Q_INVOKABLE void
Q_INVOKABLE void
Resets the main text of the toast to QString::null.
Q_INVOKABLE void
Resets the button for this toast to be a default button with no text.
A reset button will not be shown.
Q_INVOKABLE void
Resets the icon URL for the toast to an empty, default-constructed QUrl.
Q_INVOKABLE void
Resets the modality of the toast to bb::system::SystemUiModality::Application.
Q_INVOKABLE void
Resets the position of the toast to bb::system::SystemUiPosition::MiddleCenter.
bb::system::SystemUiResult::Type
Retrieves the result of the last completed request.
If no request has been made, or if a request is pending, bb::system::SystemUiResult::None is returned. See also:Q_invokable Vs Public Slot
bb::system::SystemUiResult for the list of possible results.
Since:BlackBerry 10.0.0
void
Q Invocable Public Slot Machine
| Parameters | |
|---|---|
| update | true if the toast updates automatically, false if the toast does not update automatically (in which case the show() method must be called after updating the toast presentation properties). |
void
| Parameters | |
|---|---|
| body | The new text of the toast. |
void
| Parameters | |
|---|---|
| icon | The new local path to the icon for the toast. |
void
| Parameters | |
|---|---|
| newModality | The new modality preference. See bb::system::SystemUiModality for the list of possible values. |
void
| Parameters | |
|---|---|
| newPosition | The new toast position. See bb::system::SystemUiPosition for the list of valid positions. |
void
bb::system::SystemUiResult::Type
Displays or updates the toast based on current property values.
The result of the request can be retrieved using the SystemToast::result property, or by using the finished() signal. The button that was selected can be retrieved with the buttonSelection() method.
Unlike show(), this function blocks until a button selection is made or the toast times out. If the toast is already on the screen, this method returns immediately with bb::system::SystemUiResult::DialogCannotBlock.
Note: Blocking occurs by starting a nested
QEventLoop. To use this method safely, the following conditions must be met:Any connections to this slot must use a Qt::QueuedConnection, or the slot must be triggered using QTimer::singleShot(), and
QObject::deleteLater() must be used in place of delete when deleting the toast object. If these conditions are not met, unexpected behavior may result.
The result of the request. See bb::system::SystemUiResult for the list of possible results.
void
Displays a toast based on current property values.
The result of the request can be retrieved with the SystemToast::result property, or by using the finished() signal. The button that was selected can be retrieved with the buttonSelection() method.
Control is returned to the caller immediately. For a blocking request, use exec().
void
Updates an on-screen toast based on the current property values.
If the toast is not on the screen, this method returns immediately and no changes are made to the toast.
void
Emitted when the autoUpdateEnabled property is changed programmatically.
| Parameters | |
|---|---|
| value | The new value of the autoUpdateEnabled property. |
void
Emitted when the body property is changed programmatically.
| Parameters | |
|---|---|
| value | The new value of the body property. |
void
The button selection can be retrieved with buttonSelection().| Parameters | |
|---|---|
| value | The result of the request. See bb::system::SystemUiResult for the list of possible results. |
void
Emitted when the icon property is changed programmatically.
| Parameters | |
|---|---|
| value | The new value of the icon property. |
void
Emitted when the modality property is changed programmatically.
Q Invocable Public Slot Machines
| Parameters | |
|---|---|
| newModality | The new value of the modality property. |
Q Invocable Public Slot Poker
void
Emitted when the position property is changed programmatically.
Q Invocable Public Slot Wins
| Parameters | |
|---|---|
| value | The new value of the position property. |