45 lines
1.7 KiB
Plaintext
45 lines
1.7 KiB
Plaintext
// Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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// SPDX-License-Identifier: BSD-3-Clause
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/*! \page qtsingleapplication-example-loader.html
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\title Loading Documents
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The application in this example loads or prints the documents
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passed as commandline parameters to further instances of this
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application.
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\quotefromfile loader/main.cpp
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\printuntil };
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The user interface in this application is a QMainWindow subclass
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with a QMdiArea as the central widget. It implements a slot
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\c handleMessage() that will be connected to the messageReceived()
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signal of the QtSingleApplication class.
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\printuntil }
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The MainWindow constructor creates a minimal user interface.
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\printto case Print:
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The handleMessage() slot interprets the message passed in as a
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filename that can be prepended with \e /print to indicate that
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the file should just be printed rather than loaded.
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\printto #include
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Loading the file will also activate the window.
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\printto mw
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The \c main entry point function creates a QtSingleApplication
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object, and creates a message to send to a running instance
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of the application. If the message was sent successfully the
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process exits immediately.
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\printuntil }
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If the message could not be sent the application starts up. Note
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that \c false is passed to the call to setActivationWindow() to
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prevent automatic activation for every message received, e.g. when
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the application should just print a file. Instead, the message
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handling function determines whether activation is requested, and
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signals that by emitting the needToShow() signal. This is then
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simply connected directly to QtSingleApplication's
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activateWindow() slot.
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*/
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