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The QClipboard class provides access to the window system clipboard. More...
#include <QClipboard>
Inherits QObject.
The QClipboard class provides access to the window system clipboard.
The clipboard offers a simple mechanism to copy and paste data between applications.
QClipboard supports the same data types that QDrag does, and uses similar mechanisms. For advanced clipboard usage read Drag and Drop.
There is a single QClipboard object in an application, accessible as QApplication::clipboard().
Example:
QClipboard *clipboard = QApplication::clipboard(); QString originalText = clipboard->text(); ... clipboard->setText(newText);
QClipboard features some convenience functions to access common data types: setText() allows the exchange of Unicode text and setPixmap() and setImage() allows the exchange of QPixmaps and QImages between applications. The setMimeData() function is the ultimate in flexibility: it allows you to add any QMimeData into the clipboard. There are corresponding getters for each of these, e.g. text(), image() and pixmap(). You can clear the clipboard by calling clear().
See also QApplication.
This enum type is used to control which part of the system clipboard is used by QClipboard::data(), QClipboard::setData() and related functions.
Constant | Value | Description |
---|---|---|
QClipboard::Clipboard | 0 | indicates that data should be stored and retrieved from the global clipboard. |
QClipboard::Selection | 1 | indicates that data should be stored and retrieved from the global mouse selection. |
Note: Support for Selection is provided only on systems with a global mouse selection (e.g. X11).
See also QClipboard::supportsSelection().
Clear the clipboard contents.
The mode argument is used to control which part of the system clipboard is used. If mode is QClipboard::Clipboard, this function clears the the global clipboard contents. If mode is QClipboard::Selection, this function clears the global mouse selection contents.
See also QClipboard::Mode and supportsSelection().
This signal is emitted when the clipboard data is changed.
Returns the clipboard image, or returns a null image if the clipboard does not contain an image or if it contains an image in an unsupported image format.
The mode argument is used to control which part of the system clipboard is used. If mode is QClipboard::Clipboard, the image is retrieved from the global clipboard. If mode is QClipboard::Selection, the image is retrieved from the global mouse selection.
See also setImage(), pixmap(), data(), and QImage::isNull().
Returns a reference to a QMimeData representation of the current clipboard data.
The mode argument is used to control which part of the system clipboard is used. If mode is QClipboard::Clipboard, the data is retrieved from the global clipboard. If mode is QClipboard::Selection, the data is retrieved from the global mouse selection.
The text(), image(), and pixmap() functions are simpler wrappers for retrieving text, image, and pixmap data.
See also setMimeData().
Returns true if this clipboard object owns the clipboard data; otherwise returns false.
Returns true if this clipboard object owns the mouse selection data; otherwise returns false.
Returns the clipboard pixmap, or null if the clipboard does not contain a pixmap. Note that this can lose information. For example, if the image is 24-bit and the display is 8-bit, the result is converted to 8 bits, and if the image has an alpha channel, the result just has a mask.
The mode argument is used to control which part of the system clipboard is used. If mode is QClipboard::Clipboard, the pixmap is retrieved from the global clipboard. If mode is QClipboard::Selection, the pixmap is retrieved from the global mouse selection.
See also setPixmap(), image(), data(), and QPixmap::convertFromImage().
This signal is emitted when the selection is changed. This only applies to windowing systems that support selections, e.g. X11. Windows doesn't support selections.
Copies the image into the clipboard.
The mode argument is used to control which part of the system clipboard is used. If mode is QClipboard::Clipboard, the image is stored in the global clipboard. If mode is QClipboard::Selection, the data is stored in the global mouse selection.
This is shorthand for:
QMimeData *data = new QMimeData; data->setPixmap(image); clipboard->setMimeData(data, mode);
See also image(), setPixmap(), and setData().
Sets the clipboard data to src. Ownership of the data is transferred to the clipboard. If you want to remove the data either call clear() or call setData() again with new data.
The mode argument is used to control which part of the system clipboard is used. If mode is QClipboard::Clipboard, the data is retrieved from the global clipboard. If mode is QClipboard::Selection, the data is retrieved from the global mouse selection.
The setText(), setImage() and setPixmap() functions are simpler wrappers for setting text, image and pixmap data respectively.
See also mimeData() and data().
Copies pixmap into the clipboard. Note that this is slower than setImage() because it needs to convert the QPixmap to a QImage first.
The mode argument is used to control which part of the system clipboard is used. If mode is QClipboard::Clipboard, the pixmap is stored in the global clipboard. If mode is QClipboard::Selection, the pixmap is stored in the global mouse selection.
See also pixmap(), setImage(), and setData().
Copies text into the clipboard as plain text.
The mode argument is used to control which part of the system clipboard is used. If mode is QClipboard::Clipboard, the text is stored in the global clipboard. If mode is QClipboard::Selection, the text is stored in the global mouse selection.
See also text() and setData().
Returns true if the clipboard supports mouse selection; otherwise returns false.
Returns the clipboard text as plain text, or an empty string if the clipboard does not contain any text.
The mode argument is used to control which part of the system clipboard is used. If mode is QClipboard::Clipboard, the text is retrieved from the global clipboard. If mode is QClipboard::Selection, the text is retrieved from the global mouse selection.
See also setText() and data().
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
Returns the clipboard text in subtype subtype, or an empty string if the clipboard does not contain any text. If subtype is null, any subtype is acceptable, and subtype is set to the chosen subtype.
The mode argument is used to control which part of the system clipboard is used. If mode is QClipboard::Clipboard, the text is retrieved from the global clipboard. If mode is QClipboard::Selection, the text is retrieved from the global mouse selection.
Common values for subtype are "plain" and "html".
See also setText() and data().
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