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The TQCursor class provides a mouse cursor with an arbitrary shape. More...
#include <tqcursor.h>
Inherits TQt.
The TQCursor class provides a mouse cursor with an arbitrary shape.
This class is mainly used to create mouse cursors that are associated with particular widgets and to get and set the position of the mouse cursor.
TQt has a number of standard cursor shapes, but you can also make custom cursor shapes based on a TQBitmap, a mask and a hotspot.
To associate a cursor with a widget, use TQWidget::setCursor(). To associate a cursor with all widgets (normally for a short period of time), use TQApplication::setOverrideCursor().
To set a cursor shape use TQCursor::setShape() or use the TQCursor constructor which takes the shape as argument, or you can use one of the predefined cursors defined in the CursorShape enum.
If you want to create a cursor with your own bitmap, either use the TQCursor constructor which takes a bitmap and a mask or the constructor which takes a pixmap as arguments.
To set or get the position of the mouse cursor use the static methods TQCursor::pos() and TQCursor::setPos().
See also TQWidget, GUI Design Handbook: Cursors, Widget Appearance and Style, and Implicitly and Explicitly Shared Classes.
On X11, TQt supports the Xcursor library, which allows for full color icon themes. The table below shows the cursor name used for each TQt::CursorShape value. If a cursor cannot be found using the name shown below, a standard X11 cursor will be used instead. Note: X11 does not provide appropriate cursors for all possible TQt::CursorShape values. It is possible that some cursors will be taken from the Xcursor theme, while others will use an internal bitmap cursor.
| TQt::CursorShape Values | Cursor Names |
|---|---|
| TQt::ArrowCursor | left_ptr |
| TQt::UpArrowCursor | up_arrow |
| TQt::CrossCursor | cross |
| TQt::WaitCursor | wait |
| TQt::BusyCursor | left_ptr_watch |
| TQt::IbeamCursor | ibeam |
| TQt::SizeVerCursor | size_ver |
| TQt::SizeHorCursor | size_hor |
| TQt::SizeBDiagCursor | size_bdiag |
| TQt::SizeFDiagCursor | size_fdiag |
| TQt::SizeAllCursor | size_all |
| TQt::SplitVCursor | split_v |
| TQt::SplitHCursor | split_h |
| TQt::PointingHandCursor | pointing_hand |
| TQt::ForbiddenCursor | forbidden |
| TQt::WhatsThisCursor | whats_this |
See CursorShape for a list of shapes.
See also setShape().
bitmap and mask make up the bitmap. hotX and hotY define the cursor's hot spot.
If hotX is negative, it is set to the bitmap().width()/2. If hotY is negative, it is set to the bitmap().height()/2.
The cursor bitmap (B) and mask (M) bits are combined like this:
Use the global TQt color color0 to draw 0-pixels and color1 to draw 1-pixels in the bitmaps.
Valid cursor sizes depend on the display hardware (or the underlying window system). We recommend using 32x32 cursors, because this size is supported on all platforms. Some platforms also support 16x16, 48x48 and 64x64 cursors.
See also TQBitmap::TQBitmap() and TQBitmap::setMask().
pixmap is the image. It is usual to give it a mask (set using TQPixmap::setMask()). hotX and hotY define the cursor's hot spot.
If hotX is negative, it is set to the pixmap().width()/2. If hotY is negative, it is set to the pixmap().height()/2.
Valid cursor sizes depend on the display hardware (or the underlying window system). We recommend using 32x32 cursors, because this size is supported on all platforms. Some platforms also support 16x16, 48x48 and 64x64 cursors.
Currently, only black-and-white pixmaps can be used.
See also TQPixmap::TQPixmap() and TQPixmap::setMask().
Creates a cursor with the specified window system handle handle.
Warning: Portable in principle, but if you use it you are probably about to do something non-portable. Be careful.
See also initialize().
Warning: Portable in principle, but if you use it you are probably about to do something non-portable. Be careful.
See also cleanup().
You can call TQWidget::mapFromGlobal() to translate it to widget coordinates.
See also setPos(), TQWidget::mapFromGlobal(), and TQWidget::mapToGlobal().
Examples: chart/canvasview.cpp, fileiconview/tqfileiconview.cpp, and menu/menu.cpp.
You can call TQWidget::mapToGlobal() to translate widget coordinates to global screen coordinates.
See also pos(), TQWidget::mapFromGlobal(), and TQWidget::mapToGlobal().
See CursorShape for the list of cursor shapes.
See also shape().
See also setShape().
See also Format of the TQDataStream operators.
See also Format of the TQDataStream operators.
This file is part of the TQt toolkit. Copyright © 1995-2007 Trolltech. All Rights Reserved.
| Copyright © 2007 Trolltech | Trademarks | TQt 3.3.8
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