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| 32 | <td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>QAccessibleInterface Class Reference</h1>
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| 33 |
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| 34 | <p>The QAccessibleInterface class defines an interface that exposes information about accessible objects.
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| 35 | <a href="#details">More...</a>
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| 36 | <p><tt>#include <<a href="qaccessible-h.html">qaccessible.h</a>></tt>
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| 37 | <p>Inherits <a href="qaccessible.html">QAccessible</a>.
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| 38 | <p>Inherited by <a href="qaccessibleobject.html">QAccessibleObject</a>.
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| 39 | <p><a href="qaccessibleinterface-members.html">List of all member functions.</a>
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| 40 | <h2>Public Members</h2>
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| 41 | <ul>
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| 42 | <li class=fn>virtual bool <a href="#isValid"><b>isValid</b></a> () const = 0</li>
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| 43 | <li class=fn>virtual int <a href="#childCount"><b>childCount</b></a> () const = 0</li>
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| 44 | <li class=fn>virtual QRESULT <a href="#queryChild"><b>queryChild</b></a> ( int control, QAccessibleInterface ** iface ) const = 0</li>
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| 45 | <li class=fn>virtual QRESULT <a href="#queryParent"><b>queryParent</b></a> ( QAccessibleInterface ** iface ) const = 0</li>
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| 46 | <li class=fn>virtual int <a href="#controlAt"><b>controlAt</b></a> ( int x, int y ) const = 0</li>
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| 47 | <li class=fn>virtual QRect <a href="#rect"><b>rect</b></a> ( int control ) const = 0</li>
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| 48 | <li class=fn>virtual int <a href="#navigate"><b>navigate</b></a> ( NavDirection direction, int startControl ) const = 0</li>
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| 49 | <li class=fn>virtual QString <a href="#text"><b>text</b></a> ( Text t, int control ) const = 0</li>
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| 50 | <li class=fn>virtual void <a href="#setText"><b>setText</b></a> ( Text t, int control, const QString & text ) = 0</li>
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| 51 | <li class=fn>virtual Role <a href="#role"><b>role</b></a> ( int control ) const = 0</li>
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| 52 | <li class=fn>virtual State <a href="#state"><b>state</b></a> ( int control ) const = 0</li>
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| 53 | <li class=fn>virtual QMemArray<int> <a href="#selection"><b>selection</b></a> () const = 0</li>
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| 54 | <li class=fn>virtual bool <a href="#doDefaultAction"><b>doDefaultAction</b></a> ( int control ) = 0</li>
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| 55 | <li class=fn>virtual bool <a href="#setFocus"><b>setFocus</b></a> ( int control ) = 0</li>
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| 56 | <li class=fn>virtual bool <a href="#setSelected"><b>setSelected</b></a> ( int control, bool on, bool extend ) = 0</li>
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| 57 | <li class=fn>virtual void <a href="#clearSelection"><b>clearSelection</b></a> () = 0</li>
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| 58 | </ul>
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| 59 | <hr><a name="details"></a><h2>Detailed Description</h2>
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| 60 |
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| 61 |
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| 62 | The QAccessibleInterface class defines an interface that exposes information about accessible objects.
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| 63 | <p>
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| 64 | <p>See also <a href="misc.html">Miscellaneous Classes</a>.
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| 65 |
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| 66 | <hr><h2>Member Function Documentation</h2>
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| 67 | <h3 class=fn>int <a name="childCount"></a>QAccessibleInterface::childCount () const<tt> [pure virtual]</tt>
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| 68 | </h3>
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| 69 |
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| 70 | <p> Returns the number of children that belong to this object. A child
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| 71 | can provide accessibility information on it's own (e.g. a child
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| 72 | widget), or be a sub-element of this accessible object.
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| 73 | <p> All objects provide this information.
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| 74 | <p> <p>See also <a href="#queryChild">queryChild</a>().
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| 75 |
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| 76 | <h3 class=fn>void <a name="clearSelection"></a>QAccessibleInterface::clearSelection ()<tt> [pure virtual]</tt>
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| 77 | </h3>
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| 78 |
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| 79 | <p> Removes any selection from the object.
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| 80 | <p> <p>See also <a href="#setSelected">setSelected</a>().
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| 81 |
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| 82 | <h3 class=fn>int <a name="controlAt"></a>QAccessibleInterface::controlAt ( int x, int y ) const<tt> [pure virtual]</tt>
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| 83 | </h3>
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| 84 |
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| 85 | <p> Returns the ID of the child that contains the screen coordinates
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| 86 | (<em>x</em>, <em>y</em>). This function returns 0 if the point is positioned
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| 87 | on the object itself. If the tested point is outside the
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| 88 | boundaries of the object this function returns -1.
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| 89 | <p> All visual objects provide this information.
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| 90 |
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| 91 | <h3 class=fn>bool <a name="doDefaultAction"></a>QAccessibleInterface::doDefaultAction ( int control )<tt> [pure virtual]</tt>
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| 92 | </h3>
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| 93 |
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| 94 | <p> Calling this function performs the default action of the child
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| 95 | object specified by <em>control</em>, or the default action of the
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| 96 | object itself if <em>control</em> is 0.
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| 97 |
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| 98 | <h3 class=fn>bool <a name="isValid"></a>QAccessibleInterface::isValid () const<tt> [pure virtual]</tt>
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| 99 | </h3>
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| 100 |
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| 101 | <p> Returns TRUE if all the data necessary to use this interface
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| 102 | implementation is valid (e.g. all pointers are non-null),
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| 103 | otherwise returns FALSE.
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| 104 |
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| 105 | <h3 class=fn>int <a name="navigate"></a>QAccessibleInterface::navigate ( <a href="qaccessible.html#NavDirection-enum">NavDirection</a> direction, int startControl ) const<tt> [pure virtual]</tt>
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| 106 | </h3>
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| 107 |
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| 108 | <p> This function traverses to another object, or to a sub-element of
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| 109 | the current object. <em>direction</em> specifies in which direction to
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| 110 | navigate, and <em>startControl</em> specifies the start point of the
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| 111 | navigation, which is either 0 if the navigation starts at the
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| 112 | object itself, or an ID of one of the object's sub-elements.
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| 113 | <p> The function returns the ID of the sub-element located in the <em>direction</em> specified. If there is nothing in the navigated <em>direction</em>, this function returns -1.
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| 114 | <p> All objects support navigation.
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| 115 |
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| 116 | <h3 class=fn>QRESULT <a name="queryChild"></a>QAccessibleInterface::queryChild ( int control, <a href="qaccessibleinterface.html">QAccessibleInterface</a> ** iface ) const<tt> [pure virtual]</tt>
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| 117 | </h3>
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| 118 |
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| 119 | <p> Sets <em>iface</em> to point to the implementation of the
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| 120 | QAccessibleInterface for the child specified with <em>control</em>. If
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| 121 | the child doesn't provide accessibility information on it's own,
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| 122 | the value of <em>iface</em> is set to 0. For those elements, this
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| 123 | object is responsible for exposing the child's properties.
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| 124 | <p> All objects provide this information.
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| 125 | <p> <p>See also <a href="#childCount">childCount</a>() and <a href="#queryParent">queryParent</a>().
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| 126 |
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| 127 | <h3 class=fn>QRESULT <a name="queryParent"></a>QAccessibleInterface::queryParent ( <a href="qaccessibleinterface.html">QAccessibleInterface</a> ** iface ) const<tt> [pure virtual]</tt>
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| 128 | </h3>
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| 129 |
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| 130 | <p> Sets <em>iface</em> to point to the implementation of the
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| 131 | QAccessibleInterface for the parent object, or to 0 if there is
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| 132 | no such implementation or object.
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| 133 | <p> All objects provide this information.
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| 134 | <p> <p>See also <a href="#queryChild">queryChild</a>().
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| 135 |
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| 136 | <h3 class=fn><a href="qrect.html">QRect</a> <a name="rect"></a>QAccessibleInterface::rect ( int control ) const<tt> [pure virtual]</tt>
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| 137 | </h3>
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| 138 |
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| 139 | <p> Returns the location of the child specified with <em>control</em> in
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| 140 | screen coordinates. This function returns the location of the
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| 141 | object itself if <em>control</em> is 0.
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| 142 | <p> All visual objects provide this information.
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| 143 |
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| 144 | <h3 class=fn><a href="qaccessible.html#Role-enum">Role</a> <a name="role"></a>QAccessibleInterface::role ( int control ) const<tt> [pure virtual]</tt>
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| 145 | </h3>
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| 146 |
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| 147 | <p> Returns the role of the object if <em>control</em> is 0, or the role of
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| 148 | the object's sub-element with ID <em>control</em>. The role of an object
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| 149 | is usually static. All accessible objects have a role.
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| 150 | <p> <p>See also <a href="#text">text</a>(), <a href="#state">state</a>(), and <a href="#selection">selection</a>().
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| 151 |
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| 152 | <h3 class=fn><a href="qmemarray.html">QMemArray</a><int> <a name="selection"></a>QAccessibleInterface::selection () const<tt> [pure virtual]</tt>
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| 153 | </h3>
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| 154 |
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| 155 | <p> Returns the list of all the element IDs that are selected.
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| 156 | <p> <p>See also <a href="#text">text</a>(), <a href="#role">role</a>(), and <a href="#state">state</a>().
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| 157 |
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| 158 | <h3 class=fn>bool <a name="setFocus"></a>QAccessibleInterface::setFocus ( int control )<tt> [pure virtual]</tt>
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| 159 | </h3>
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| 160 |
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| 161 | <p> Gives the focus to the child object specified by <em>control</em>, or to
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| 162 | the object itself if <em>control</em> is 0.
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| 163 | <p> Returns TRUE if the focus could be set; otherwise returns FALSE.
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| 164 |
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| 165 | <h3 class=fn>bool <a name="setSelected"></a>QAccessibleInterface::setSelected ( int control, bool on, bool extend )<tt> [pure virtual]</tt>
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| 166 | </h3>
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| 167 |
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| 168 | <p> Sets the selection of the child object with ID <em>control</em> to <em>on</em>. If <em>extend</em> is TRUE, all child elements between the focused
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| 169 | item and the specified child object have their selection set to <em>on</em>.
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| 170 | <p> Returns TRUE if the selection could be set; otherwise returns
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| 171 | FALSE.
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| 172 | <p> <p>See also <a href="#setFocus">setFocus</a>() and <a href="#clearSelection">clearSelection</a>().
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| 173 |
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| 174 | <h3 class=fn>void <a name="setText"></a>QAccessibleInterface::setText ( <a href="qaccessible.html#Text-enum">Text</a> t, int control, const <a href="qstring.html">QString</a> & text )<tt> [pure virtual]</tt>
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| 175 | </h3>
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| 176 |
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| 177 | <p> Sets the text property <em>t</em> of the child object <em>control</em> to <em>text</em>. If <em>control</em> is 0, the text property of the object itself
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| 178 | is set.
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| 179 |
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| 180 | <h3 class=fn><a href="qaccessible.html#State-enum">State</a> <a name="state"></a>QAccessibleInterface::state ( int control ) const<tt> [pure virtual]</tt>
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| 181 | </h3>
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| 182 |
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| 183 | <p> Returns the current state of the object if <em>control</em> is 0, or the
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| 184 | state of the object's sub-element element with ID <em>control</em>. All
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| 185 | objects have a state.
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| 186 | <p> <p>See also <a href="#text">text</a>(), <a href="#role">role</a>(), and <a href="#selection">selection</a>().
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| 187 |
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| 188 | <h3 class=fn><a href="qstring.html">QString</a> <a name="text"></a>QAccessibleInterface::text ( <a href="qaccessible.html#Text-enum">Text</a> t, int control ) const<tt> [pure virtual]</tt>
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| 189 | </h3>
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| 190 |
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| 191 | <p> Returns a string property <em>t</em> of the child object specified by <em>control</em>, or the string property of the object itself if <em>control</em>
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| 192 | is 0.
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| 193 | <p> The <em>Name</em> is a string used by clients to identify, find or
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| 194 | announce an accessible object for the user. All objects must have
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| 195 | a name that is unique within their container.
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| 196 | <p> An accessible object's <em>Description</em> provides textual information
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| 197 | about an object's visual appearance. The description is primarily
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| 198 | used to provide greater context for low-vision or blind users, but
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| 199 | is also used for context searching or other applications. Not all
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| 200 | objects have a description. An "OK" button would not need a
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| 201 | description, but a toolbutton that shows a picture of a smiley
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| 202 | would.
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| 203 | <p> The <em>Value</em> of an accessible object represents visual information
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| 204 | contained by the object, e.g. the text in a line edit. Usually,
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| 205 | the value can be modified by the user. Not all objects have a
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| 206 | value, e.g. static text labels don't, and some objects have a
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| 207 | state that already is the value, e.g. toggle buttons.
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| 208 | <p> The <em>Help</em> text provides information about the function and
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| 209 | usage of an accessible object. Not all objects provide this
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| 210 | information.
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| 211 | <p> An accessible object's <em>DefaultAction</em> describes the object's
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| 212 | primary method of manipulation, and should be a verb or a short
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| 213 | phrase, e.g. "Press" for a button.
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| 214 | <p> The accelerator is a keyboard shortcut that activates the default
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| 215 | action of the object. A keyboard shortcut is the underlined
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| 216 | character in the text of a menu, menu item or control, and is
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| 217 | either the character itself, or a combination of this character
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| 218 | and a modifier key like ALT, CTRL or SHIFT. Command controls like
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| 219 | tool buttons also have shortcut keys and usually display them in
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| 220 | their tooltip.
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| 221 | <p> <p>See also <a href="#role">role</a>(), <a href="#state">state</a>(), and <a href="#selection">selection</a>().
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| 222 |
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| 223 | <!-- eof -->
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| 224 | <hr><p>
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| 225 | This file is part of the <a href="index.html">Qt toolkit</a>.
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| 226 | Copyright © 1995-2007
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| 227 | <a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
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| 228 | <table width=100% cellspacing=0 border=0><tr>
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| 229 | <td>Copyright © 2007
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| 230 | <a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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| 231 | <td align=right><div align=right>Qt 3.3.8</div>
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| 232 | </table></div></address></body>
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| 233 | </html>
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