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<div class="title">wxDataFormat Class Reference<div class="ingroups"><a class="el" href="group__group__class__dnd.html">Clipboard and Drag & Drop</a></div></div> </div>
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<p><code>#include <wx/dataobj.h></code></p>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>A <a class="el" href="classwx_data_format.html" title="A wxDataFormat is an encapsulation of a platform-specific format handle which is used by the system f...">wxDataFormat</a> is an encapsulation of a platform-specific format handle which is used by the system for the clipboard and drag and drop operations. </p>
<p>The applications are usually only interested in, for example, pasting data from the clipboard only if the data is in a format the program understands and a data format is something which uniquely identifies this format.</p>
<p>On the system level, a data format is usually just a number (<code>CLIPFORMAT</code> under Windows or <code>Atom</code> under X11, for example) and the standard formats are, indeed, just numbers which can be implicitly converted to <a class="el" href="classwx_data_format.html" title="A wxDataFormat is an encapsulation of a platform-specific format handle which is used by the system f...">wxDataFormat</a>. The standard formats are:</p>
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<td><span class="itemdef">wxDF_INVALID</span> </td><td>An invalid format - used as default argument for functions taking a <a class="el" href="classwx_data_format.html" title="A wxDataFormat is an encapsulation of a platform-specific format handle which is used by the system f...">wxDataFormat</a> argument sometimes. </td></tr>
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<td><span class="itemdef">wxDF_TEXT</span> </td><td>Text format (<a class="el" href="classwx_string.html" title="String class for passing textual data to or receiving it from wxWidgets.">wxString</a>). </td></tr>
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<td><span class="itemdef">wxDF_BITMAP</span> </td><td>A bitmap (<a class="el" href="classwx_bitmap.html" title="This class encapsulates the concept of a platform-dependent bitmap, either monochrome or colour or co...">wxBitmap</a>). </td></tr>
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<td><span class="itemdef">wxDF_METAFILE</span> </td><td>A metafile (<a class="el" href="classwx_metafile.html" title="A wxMetafile represents the MS Windows metafile object, so metafile operations have no effect in X...">wxMetafile</a>, Windows only). </td></tr>
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<td><span class="itemdef">wxDF_FILENAME</span> </td><td>A list of filenames. </td></tr>
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<td><span class="itemdef">wxDF_HTML</span> </td><td>An HTML string. This is currently only valid on Mac and MSW. </td></tr>
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<p>As mentioned above, these standard formats may be passed to any function taking <a class="el" href="classwx_data_format.html" title="A wxDataFormat is an encapsulation of a platform-specific format handle which is used by the system f...">wxDataFormat</a> argument because <a class="el" href="classwx_data_format.html" title="A wxDataFormat is an encapsulation of a platform-specific format handle which is used by the system f...">wxDataFormat</a> has an implicit conversion from them (or, to be precise from the type <code>wxDataFormat::NativeFormat</code> which is the type used by the underlying platform for data formats).</p>
<p>Aside the standard formats, the application may also use custom formats which are identified by their names (strings) and not numeric identifiers. Although internally custom format must be created (or <em>registered</em>) first, you shouldn't care about it because it is done automatically the first time the <a class="el" href="classwx_data_format.html" title="A wxDataFormat is an encapsulation of a platform-specific format handle which is used by the system f...">wxDataFormat</a> object corresponding to a given format name is created. The only implication of this is that you should avoid having global <a class="el" href="classwx_data_format.html" title="A wxDataFormat is an encapsulation of a platform-specific format handle which is used by the system f...">wxDataFormat</a> objects with non-default constructor because their constructors are executed before the program has time to perform all necessary initialisations and so an attempt to do clipboard format registration at this time will usually lead to a crash!</p>
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<div><span class="lib">Library:</span>  <span class="lib_text"><a class="el" href="page_libs.html#page_libs_wxcore">wxCore</a></span></div><div><span class="category">Category:</span>  <span class="category_text"><a class="el" href="group__group__class__dnd.html">Clipboard and Drag & Drop</a></span></div><dl class="section see"><dt>See Also</dt><dd><a class="el" href="overview_dnd.html">Drag and Drop Overview</a>, <a class="el" href="page_samples.html#page_samples_dnd">Drag & Drop Sample</a>, <a class="el" href="classwx_data_object.html" title="A wxDataObject represents data that can be copied to or from the clipboard, or dragged and dropped...">wxDataObject</a> </dd></dl>
</div><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:add51a8562152c7925113829dc297c43f"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classwx_data_format.html#add51a8562152c7925113829dc297c43f">wxDataFormat</a> (<a class="el" href="defs_8h.html#a263109c79f708754bf656c7768b27047">wxDataFormatId</a> format=<a class="el" href="defs_8h.html#a263109c79f708754bf656c7768b27047a8e449ff1cdf3fe95c9af901bb89d4053">wxDF_INVALID</a>)</td></tr>
<tr class="memdesc:add51a8562152c7925113829dc297c43f"><td class="mdescLeft"> </td><td class="mdescRight">Constructs a data format object for one of the standard data formats or an empty data object (use <a class="el" href="classwx_data_format.html#a9400041e82a194b015bdf9d90805f701" title="Sets the format to the given value, which should be one of wxDF_XXX constants.">SetType()</a> or <a class="el" href="classwx_data_format.html#a3b3748f25fc57f360b3ea5f68c238ee7" title="Sets the format to be the custom format identified by the given name.">SetId()</a> later in this case). <a href="#add51a8562152c7925113829dc297c43f"></a><br/></td></tr>
<tr class="separator:add51a8562152c7925113829dc297c43f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a6c08911611be5e3a5dd35528b4d091db"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classwx_data_format.html#a6c08911611be5e3a5dd35528b4d091db">wxDataFormat</a> (const <a class="el" href="classwx_string.html">wxString</a> &format)</td></tr>
<tr class="memdesc:a6c08911611be5e3a5dd35528b4d091db"><td class="mdescLeft"> </td><td class="mdescRight">Constructs a data format object for a custom format identified by its name <em>format</em>. <a href="#a6c08911611be5e3a5dd35528b4d091db"></a><br/></td></tr>
<tr class="separator:a6c08911611be5e3a5dd35528b4d091db"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aad852ba717c2db4d3d61b9e4ac2f09d9"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classwx_string.html">wxString</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classwx_data_format.html#aad852ba717c2db4d3d61b9e4ac2f09d9">GetId</a> () const </td></tr>
<tr class="memdesc:aad852ba717c2db4d3d61b9e4ac2f09d9"><td class="mdescLeft"> </td><td class="mdescRight">Returns the name of a custom format (this function will fail for a standard format). <a href="#aad852ba717c2db4d3d61b9e4ac2f09d9"></a><br/></td></tr>
<tr class="separator:aad852ba717c2db4d3d61b9e4ac2f09d9"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a0747b4235e1df0e2eead9cba3bbc53e9"><td class="memItemLeft" align="right" valign="top"><a class="el" href="defs_8h.html#a263109c79f708754bf656c7768b27047">wxDataFormatId</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classwx_data_format.html#a0747b4235e1df0e2eead9cba3bbc53e9">GetType</a> () const </td></tr>
<tr class="memdesc:a0747b4235e1df0e2eead9cba3bbc53e9"><td class="mdescLeft"> </td><td class="mdescRight">Returns the platform-specific number identifying the format. <a href="#a0747b4235e1df0e2eead9cba3bbc53e9"></a><br/></td></tr>
<tr class="separator:a0747b4235e1df0e2eead9cba3bbc53e9"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a3b3748f25fc57f360b3ea5f68c238ee7"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classwx_data_format.html#a3b3748f25fc57f360b3ea5f68c238ee7">SetId</a> (const <a class="el" href="classwx_string.html">wxString</a> &format)</td></tr>
<tr class="memdesc:a3b3748f25fc57f360b3ea5f68c238ee7"><td class="mdescLeft"> </td><td class="mdescRight">Sets the format to be the custom format identified by the given name. <a href="#a3b3748f25fc57f360b3ea5f68c238ee7"></a><br/></td></tr>
<tr class="separator:a3b3748f25fc57f360b3ea5f68c238ee7"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a9400041e82a194b015bdf9d90805f701"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classwx_data_format.html#a9400041e82a194b015bdf9d90805f701">SetType</a> (<a class="el" href="defs_8h.html#a263109c79f708754bf656c7768b27047">wxDataFormatId</a> type)</td></tr>
<tr class="memdesc:a9400041e82a194b015bdf9d90805f701"><td class="mdescLeft"> </td><td class="mdescRight">Sets the format to the given value, which should be one of wxDF_XXX constants. <a href="#a9400041e82a194b015bdf9d90805f701"></a><br/></td></tr>
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<tr class="memitem:a3195c7a3d956201e8ef5076796814fd9"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classwx_data_format.html#a3195c7a3d956201e8ef5076796814fd9">operator!=</a> (const <a class="el" href="classwx_data_format.html">wxDataFormat</a> &format) const </td></tr>
<tr class="memdesc:a3195c7a3d956201e8ef5076796814fd9"><td class="mdescLeft"> </td><td class="mdescRight">Returns <span class="literal">true</span> if the formats are different. <a href="#a3195c7a3d956201e8ef5076796814fd9"></a><br/></td></tr>
<tr class="separator:a3195c7a3d956201e8ef5076796814fd9"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a21fdc4110ef2504bfae857dcb3c6c144"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classwx_data_format.html#a21fdc4110ef2504bfae857dcb3c6c144">operator!=</a> (<a class="el" href="defs_8h.html#a263109c79f708754bf656c7768b27047">wxDataFormatId</a> format) const </td></tr>
<tr class="memdesc:a21fdc4110ef2504bfae857dcb3c6c144"><td class="mdescLeft"> </td><td class="mdescRight">Returns <span class="literal">true</span> if the formats are different. <a href="#a21fdc4110ef2504bfae857dcb3c6c144"></a><br/></td></tr>
<tr class="separator:a21fdc4110ef2504bfae857dcb3c6c144"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aade3c187a590872495bdae7c87e478b3"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classwx_data_format.html#aade3c187a590872495bdae7c87e478b3">operator==</a> (const <a class="el" href="classwx_data_format.html">wxDataFormat</a> &format) const </td></tr>
<tr class="memdesc:aade3c187a590872495bdae7c87e478b3"><td class="mdescLeft"> </td><td class="mdescRight">Returns <span class="literal">true</span> if the formats are equal. <a href="#aade3c187a590872495bdae7c87e478b3"></a><br/></td></tr>
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<tr class="memitem:aaca5c8ae97f3e1efa5490edcc524af02"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classwx_data_format.html#aaca5c8ae97f3e1efa5490edcc524af02">operator==</a> (<a class="el" href="defs_8h.html#a263109c79f708754bf656c7768b27047">wxDataFormatId</a> format) const </td></tr>
<tr class="memdesc:aaca5c8ae97f3e1efa5490edcc524af02"><td class="mdescLeft"> </td><td class="mdescRight">Returns <span class="literal">true</span> if the formats are equal. <a href="#aaca5c8ae97f3e1efa5490edcc524af02"></a><br/></td></tr>
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<h2 class="groupheader">Constructor & Destructor Documentation</h2>
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<td class="memname">wxDataFormat::wxDataFormat </td>
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<td class="paramname"><em>format</em> = <code><a class="el" href="defs_8h.html#a263109c79f708754bf656c7768b27047a8e449ff1cdf3fe95c9af901bb89d4053">wxDF_INVALID</a></code></td><td>)</td>
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<p>Constructs a data format object for one of the standard data formats or an empty data object (use <a class="el" href="classwx_data_format.html#a9400041e82a194b015bdf9d90805f701" title="Sets the format to the given value, which should be one of wxDF_XXX constants.">SetType()</a> or <a class="el" href="classwx_data_format.html#a3b3748f25fc57f360b3ea5f68c238ee7" title="Sets the format to be the custom format identified by the given name.">SetId()</a> later in this case). </p>
<p><b>wxPerl Note:</b> In wxPerl use Wx::Bitmap->newNative(format). </p>
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<p>Constructs a data format object for a custom format identified by its name <em>format</em>. </p>
<p><b>wxPerl Note:</b> In wxPerl use Wx::Bitmap->newUser(format). </p>
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<h2 class="groupheader">Member Function Documentation</h2>
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<td class="memname"><a class="el" href="classwx_string.html">wxString</a> wxDataFormat::GetId </td>
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<p>Returns the name of a custom format (this function will fail for a standard format). </p>
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<td class="memname"><a class="el" href="defs_8h.html#a263109c79f708754bf656c7768b27047">wxDataFormatId</a> wxDataFormat::GetType </td>
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<p>Returns the platform-specific number identifying the format. </p>
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<p>Returns <span class="literal">true</span> if the formats are different. </p>
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<td class="paramname"><em>format</em></td><td>)</td>
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<p>Returns <span class="literal">true</span> if the formats are different. </p>
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<p>Returns <span class="literal">true</span> if the formats are equal. </p>
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<td class="memname">bool wxDataFormat::operator== </td>
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<td class="paramtype"><a class="el" href="defs_8h.html#a263109c79f708754bf656c7768b27047">wxDataFormatId</a> </td>
<td class="paramname"><em>format</em></td><td>)</td>
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<p>Returns <span class="literal">true</span> if the formats are equal. </p>
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<td class="memname">void wxDataFormat::SetId </td>
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<td class="paramtype">const <a class="el" href="classwx_string.html">wxString</a> & </td>
<td class="paramname"><em>format</em></td><td>)</td>
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<p>Sets the format to be the custom format identified by the given name. </p>
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<td class="memname">void wxDataFormat::SetType </td>
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<td class="paramtype"><a class="el" href="defs_8h.html#a263109c79f708754bf656c7768b27047">wxDataFormatId</a> </td>
<td class="paramname"><em>type</em></td><td>)</td>
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<p>Sets the format to the given value, which should be one of wxDF_XXX constants. </p>
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