This is a type of device context that allows a metafile object to be
created (Windows only), and has most of the characteristics of a normal
- @b wxDC. The wxMetafileDC::Close member must be called after drawing into the
+ @b wxDC.
+ The wxMetafileDC::Close member must be called after drawing into the
device context, to return a metafile. The only purpose for this at
- present is to allow the metafile to be copied to the clipboard (see wxMetafile).
+ present is to allow the metafile to be copied to the clipboard
+ (see wxMetafile).
Adding metafile capability to an application should be easy if you
already write to a wxDC; simply pass the wxMetafileDC to your drawing
function instead. You may wish to conditionally compile this code so it
- is not compiled under X (although no harm will result if you leave it
- in).
+ is not compiled under X (although no harm will result if you leave it in).
Note that a metafile saved to disk is in standard Windows metafile format,
and cannot be imported into most applications. To make it importable,
- call the function ::wxMakeMetafilePlaceable after
- closing your disk-based metafile device context.
+ call the function ::wxMakeMetafilePlaceable after closing your disk-based
+ metafile device context.
@library{wxcore}
@category{dc}
{
public:
/**
- Constructor. If no filename is passed, the metafile is created
- in memory.
+ Constructor.
+ If no filename is passed, the metafile is created in memory.
*/
- wxMetafileDC(const wxString& filename = "");
+ wxMetafileDC(const wxString& filename = wxEmptyString);
/**
Destructor.
~wxMetafileDC();
/**
- This must be called after the device context is finished with. A
- metafile is returned, and ownership of it passes to the calling
+ This must be called after the device context is finished with.
+ A metafile is returned, and ownership of it passes to the calling
application (so it should be destroyed explicitly).
*/
wxMetafile* Close();
A @b wxMetafile represents the MS Windows metafile object, so metafile
operations have no effect in X. In wxWidgets, only sufficient functionality
has been provided for copying a graphic to the clipboard; this may be extended
- in a future version. Presently, the only way of creating a metafile
- is to use a wxMetafileDC.
+ in a future version.
+
+ Presently, the only way of creating a metafile is to use a wxMetafileDC.
+
+ @onlyfor{wxmsw}
@library{wxcore}
- @category{FIXME}
+ @category{gdi}
@see wxMetafileDC
*/
{
public:
/**
- Constructor. If a filename is given, the Windows disk metafile is
- read in. Check whether this was performed successfully by
- using the @ref isok() wxMetafile:IsOk member.
+ Constructor.
+
+ If a filename is given, the Windows disk metafile is read in.
+ Check whether this was performed successfully by using the IsOk() member.
*/
- wxMetafile(const wxString& filename = "");
+ wxMetafile(const wxString& filename = wxEmptyString);
/**
Destructor.
- See @ref overview_refcountdestruct "reference-counted object destruction" for
- more info.
+
+ See @ref overview_refcount_destruct for more info.
*/
~wxMetafile();
/**
Returns @true if the metafile is valid.
*/
- bool Ok();
+ bool IsOk();
/**
Plays the metafile into the given device context, returning
Passes the metafile data to the clipboard. The metafile can no longer be
used for anything, but the wxMetafile object must still be destroyed by
the application.
+
Below is a example of metafile, metafile device context and clipboard use
from the @c hello.cpp example. Note the way the metafile dimensions
are passed to the clipboard, making use of the device context's ability
to keep track of the maximum extent of drawing commands.
+
+ @code
+ wxMetafileDC dc;
+ if (dc.IsOk())
+ {
+ Draw(dc, false);
+ wxMetafile *mf = dc.Close();
+ if (mf)
+ {
+ bool success = mf->SetClipboard((int)(dc.MaxX() + 10), (int)(dc.MaxY() + 10));
+ delete mf;
+ }
+ }
+ @endcode
*/
bool SetClipboard(int width = 0, int height = 0);
};
// Global functions/macros
// ============================================================================
-/** @ingroup group_funcmacro_gdi */
+/** @addtogroup group_funcmacro_gdi */
//@{
/**