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55<H2><A NAME="SECTION0022410000000000000000">
5620.4.1 Functions Defined in Module <tt class="module">fl</tt></A>
57</H2>
58<A NAME="FL_Functions"></A>
59<P>
60Module <tt class="module">fl</tt> defines the following functions. For more
61information about what they do, see the description of the equivalent
62C function in the FORMS documentation:
63
64<P>
65<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
66 <td><nobr><b><tt id='l2h-5114' xml:id='l2h-5114' class="function">make_form</tt></b>(</nobr></td>
67 <td><var>type, width, height</var>)</td></tr></table></dt>
68<dd>
69Create a form with given type, width and height. This returns a
70<i class="dfn">form</i> object, whose methods are described below.
71</dl>
72
73<P>
74<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
75 <td><nobr><b><tt id='l2h-5115' xml:id='l2h-5115' class="function">do_forms</tt></b>(</nobr></td>
76 <td><var></var>)</td></tr></table></dt>
77<dd>
78The standard FORMS main loop. Returns a Python object representing
79the FORMS object needing interaction, or the special value
80<tt class="constant">FL.EVENT</tt>.
81</dl>
82
83<P>
84<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
85 <td><nobr><b><tt id='l2h-5116' xml:id='l2h-5116' class="function">check_forms</tt></b>(</nobr></td>
86 <td><var></var>)</td></tr></table></dt>
87<dd>
88Check for FORMS events. Returns what <tt class="function">do_forms()</tt> above
89returns, or <code>None</code> if there is no event that immediately needs
90interaction.
91</dl>
92
93<P>
94<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
95 <td><nobr><b><tt id='l2h-5117' xml:id='l2h-5117' class="function">set_event_call_back</tt></b>(</nobr></td>
96 <td><var>function</var>)</td></tr></table></dt>
97<dd>
98Set the event callback function.
99</dl>
100
101<P>
102<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
103 <td><nobr><b><tt id='l2h-5118' xml:id='l2h-5118' class="function">set_graphics_mode</tt></b>(</nobr></td>
104 <td><var>rgbmode, doublebuffering</var>)</td></tr></table></dt>
105<dd>
106Set the graphics modes.
107</dl>
108
109<P>
110<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
111 <td><nobr><b><tt id='l2h-5119' xml:id='l2h-5119' class="function">get_rgbmode</tt></b>(</nobr></td>
112 <td><var></var>)</td></tr></table></dt>
113<dd>
114Return the current rgb mode. This is the value of the C global
115variable <tt class="cdata">fl_rgbmode</tt>.
116</dl>
117
118<P>
119<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
120 <td><nobr><b><tt id='l2h-5120' xml:id='l2h-5120' class="function">show_message</tt></b>(</nobr></td>
121 <td><var>str1, str2, str3</var>)</td></tr></table></dt>
122<dd>
123Show a dialog box with a three-line message and an OK button.
124</dl>
125
126<P>
127<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
128 <td><nobr><b><tt id='l2h-5121' xml:id='l2h-5121' class="function">show_question</tt></b>(</nobr></td>
129 <td><var>str1, str2, str3</var>)</td></tr></table></dt>
130<dd>
131Show a dialog box with a three-line message and YES and NO buttons.
132It returns <code>1</code> if the user pressed YES, <code>0</code> if NO.
133</dl>
134
135<P>
136<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
137 <td><nobr><b><tt id='l2h-5122' xml:id='l2h-5122' class="function">show_choice</tt></b>(</nobr></td>
138 <td><var>str1, str2, str3, but1</var><big>[</big><var>,
139 but2</var><big>[</big><var>, but3</var><big>]</big><var></var><big>]</big><var></var>)</td></tr></table></dt>
140<dd>
141Show a dialog box with a three-line message and up to three buttons.
142It returns the number of the button clicked by the user
143(<code>1</code>, <code>2</code> or <code>3</code>).
144</dl>
145
146<P>
147<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
148 <td><nobr><b><tt id='l2h-5123' xml:id='l2h-5123' class="function">show_input</tt></b>(</nobr></td>
149 <td><var>prompt, default</var>)</td></tr></table></dt>
150<dd>
151Show a dialog box with a one-line prompt message and text field in
152which the user can enter a string. The second argument is the default
153input string. It returns the string value as edited by the user.
154</dl>
155
156<P>
157<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
158 <td><nobr><b><tt id='l2h-5124' xml:id='l2h-5124' class="function">show_file_selector</tt></b>(</nobr></td>
159 <td><var>message, directory, pattern, default</var>)</td></tr></table></dt>
160<dd>
161Show a dialog box in which the user can select a file. It returns
162the absolute filename selected by the user, or <code>None</code> if the user
163presses Cancel.
164</dl>
165
166<P>
167<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
168 <td><nobr><b><tt id='l2h-5125' xml:id='l2h-5125' class="function">get_directory</tt></b>(</nobr></td>
169 <td><var></var>)</td></tr></table></dt>
170<dd>
171<dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
172 <td><nobr><b><tt class="function">get_pattern</tt></b>(</nobr></td>
173 <td><var></var>)</td></tr></table></dt>
174<dd><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
175 <td><nobr><b><tt class="function">get_filename</tt></b>(</nobr></td>
176 <td><var></var>)</td></tr></table></dt>
177<dd>These functions return the directory, pattern and filename (the tail
178part only) selected by the user in the last
179<tt class="function">show_file_selector()</tt> call.
180</dl>
181
182<P>
183<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
184 <td><nobr><b><tt id='l2h-5128' xml:id='l2h-5128' class="function">qdevice</tt></b>(</nobr></td>
185 <td><var>dev</var>)</td></tr></table></dt>
186<dd>
187<dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
188 <td><nobr><b><tt class="function">unqdevice</tt></b>(</nobr></td>
189 <td><var>dev</var>)</td></tr></table></dt>
190<dd><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
191 <td><nobr><b><tt class="function">isqueued</tt></b>(</nobr></td>
192 <td><var>dev</var>)</td></tr></table></dt>
193<dd><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
194 <td><nobr><b><tt class="function">qtest</tt></b>(</nobr></td>
195 <td><var></var>)</td></tr></table></dt>
196<dd><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
197 <td><nobr><b><tt class="function">qread</tt></b>(</nobr></td>
198 <td><var></var>)</td></tr></table></dt>
199<dd><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
200 <td><nobr><b><tt class="function">qreset</tt></b>(</nobr></td>
201 <td><var></var>)</td></tr></table></dt>
202<dd><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
203 <td><nobr><b><tt class="function">qenter</tt></b>(</nobr></td>
204 <td><var>dev, val</var>)</td></tr></table></dt>
205<dd><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
206 <td><nobr><b><tt class="function">get_mouse</tt></b>(</nobr></td>
207 <td><var></var>)</td></tr></table></dt>
208<dd><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
209 <td><nobr><b><tt class="function">tie</tt></b>(</nobr></td>
210 <td><var>button, valuator1, valuator2</var>)</td></tr></table></dt>
211<dd>These functions are the FORMS interfaces to the corresponding GL
212functions. Use these if you want to handle some GL events yourself
213when using <tt class="function">fl.do_events()</tt>. When a GL event is detected that
214FORMS cannot handle, <tt class="function">fl.do_forms()</tt> returns the special value
215<tt class="constant">FL.EVENT</tt> and you should call <tt class="function">fl.qread()</tt> to read
216the event from the queue. Don't use the equivalent GL functions!
217</dl>
218
219<P>
220<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
221 <td><nobr><b><tt id='l2h-5137' xml:id='l2h-5137' class="function">color</tt></b>(</nobr></td>
222 <td><var></var>)</td></tr></table></dt>
223<dd>
224<dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
225 <td><nobr><b><tt class="function">mapcolor</tt></b>(</nobr></td>
226 <td><var></var>)</td></tr></table></dt>
227<dd><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
228 <td><nobr><b><tt class="function">getmcolor</tt></b>(</nobr></td>
229 <td><var></var>)</td></tr></table></dt>
230<dd>See the description in the FORMS documentation of
231<tt class="cfunction">fl_color()</tt>, <tt class="cfunction">fl_mapcolor()</tt> and
232<tt class="cfunction">fl_getmcolor()</tt>.
233</dl>
234
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