Interface for drag surface surfaces.
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#include <gdkmm/dragsurface.h>
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| DragSurface () |
| You should derive from this class to use it.
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Interface for drag surface surfaces.
A Gdk::DragSurface is a surface that is used during a DnD operation.
- Since gtkmm 3.98:
◆ DragSurface() [1/2]
Gdk::DragSurface::DragSurface |
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protected |
You should derive from this class to use it.
◆ DragSurface() [2/2]
◆ ~DragSurface()
Gdk::DragSurface::~DragSurface |
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overridenoexcept |
◆ add_interface()
static void Gdk::DragSurface::add_interface |
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GType |
gtype_implementer | ) |
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static |
◆ get_type()
static GType Gdk::DragSurface::get_type |
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static |
Get the GType for this class, for use with the underlying GObject type system.
◆ gobj() [1/2]
Provides access to the underlying C GObject.
◆ gobj() [2/2]
Provides access to the underlying C GObject.
◆ operator=()
◆ present()
bool Gdk::DragSurface::present |
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int |
width, |
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int |
height |
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Present drag_surface.
- Parameters
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width | The unconstrained drag_surface width to layout. |
height | The unconstrained drag_surface height to layout. |
- Returns
false
if it failed to be presented, otherwise true
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◆ signal_compute_size()
- Slot Prototype:
void on_my_compute_size(DragSurfaceSize& size)
Flags: Run Last
Emitted when the size for the surface needs to be computed, when it is present.
This signal will normally be emitted during the native surface layout cycle when the surface size needs to be recomputed.
It is the responsibility of the drag surface user to handle this signal and compute the desired size of the surface, storing the computed size in the Gdk::DragSurfaceSize object that is passed to the signal handler, using Gdk::DragSurfaceSize::set_size().
Failing to set a size so will result in an arbitrary size being used as a result.
- Since gtkmm 4.12:
- Parameters
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size | The size of the drag surface. |
◆ wrap()
A Glib::wrap() method for this object.
- Parameters
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object | The C instance. |
take_copy | False if the result should take ownership of the C instance. True if it should take a new copy or ref. |
- Returns
- A C++ instance that wraps this C instance.