342 lines
13 KiB
HTML
342 lines
13 KiB
HTML
|
<html>
|
||
|
|
<body>
|
||
|
|
|
||
|
|
<hr break>
|
||
|
|
|
||
|
|
<h2><a name="Fl_Window">class Fl_Window</a></h2>
|
||
|
|
|
||
|
|
<hr>
|
||
|
|
|
||
|
|
<h3>Class Hierarchy</h3>
|
||
|
|
|
||
|
|
<ul><pre>
|
||
|
|
<a href="#Fl_Group">Fl_Group</a>
|
||
|
|
|
|
||
|
|
+----<b>Fl_Window</b>
|
||
|
|
|
|
||
|
|
+----<a href="#Fl_Double_Window">Fl_Double_Window</a>, <a href="#Fl_Gl_Window">Fl_Gl_Window</a>,
|
||
|
|
<a href="#Fl_Overlay_Window">Fl_Overlay_Window</a>, <a href="#Fl_Single_Window">Fl_Single_Window</a>
|
||
|
|
</pre></ul>
|
||
|
|
|
||
|
|
<h3>Include Files</h3>
|
||
|
|
|
||
|
|
<ul><pre>
|
||
|
|
#include <FL/Fl_Window.H>
|
||
|
|
</pre></ul>
|
||
|
|
|
||
|
|
<h3>Description</h3>
|
||
|
|
|
||
|
|
This widget produces an actual window. This can either be a main
|
||
|
|
window, with a border and title and all the window management
|
||
|
|
controls, or a "subwindow" inside a window. This is controlled
|
||
|
|
by whether or not the window has a <tt>parent()</tt>.
|
||
|
|
|
||
|
|
<p>Once you create a window, you usually add children
|
||
|
|
<tt>Fl_Widget</tt>'s to it by using <tt>window->add(child)</tt> for
|
||
|
|
each new widget. See <a href="#Fl_Group"><tt>Fl_Group</tt></a> for
|
||
|
|
more information on how to add and remove children.
|
||
|
|
|
||
|
|
<p>There are several subclasses of <tt>Fl_Window</tt> that provide
|
||
|
|
double-buffering, overlay, menu, and OpenGL support.
|
||
|
|
|
||
|
|
<p>The window's callback is done if the user tries to close a window
|
||
|
|
using the window manager and <a href="#modal"><tt>Fl::modal()</tt></a>
|
||
|
|
is zero or equal to the window. <tt>Fl_Window</tt> has a default
|
||
|
|
callback that calls <tt>Fl_Window::hide()</tt> and calls
|
||
|
|
<tt>exit(0)</tt> if this is the last top-level window.
|
||
|
|
|
||
|
|
<h3>Methods</h3>
|
||
|
|
|
||
|
|
<center>
|
||
|
|
<table width=90%>
|
||
|
|
<tr>
|
||
|
|
<td align=left valign=top>
|
||
|
|
<ul>
|
||
|
|
<li><a href="#Fl_Window.Fl_Window">Fl_Window</a>
|
||
|
|
<li><a href="#Fl_Window.~Fl_Window">~Fl_Window</a>
|
||
|
|
<li><a href="#Fl_Window.border">border</a>
|
||
|
|
<li><a href="#Fl_Window.clear_border">clear_border</a>
|
||
|
|
<li><a href="#Fl_Window.current">current</a>
|
||
|
|
</ul>
|
||
|
|
</td>
|
||
|
|
<td align=left valign=top>
|
||
|
|
<ul>
|
||
|
|
<li><a href="#Fl_Window.first_window">first_window</a>
|
||
|
|
<li><a href="#Fl_Window.free_position">free_position</a>
|
||
|
|
<li><a href="#Fl_Window.fullscreen">fullscreen</a>
|
||
|
|
<li><a href="#Fl_Window.fullscreen_off">fullscreen_off</a>
|
||
|
|
<li><a href="#Fl_Window.hide">hide</a>
|
||
|
|
</ul>
|
||
|
|
</td>
|
||
|
|
<td align=left valign=top>
|
||
|
|
<ul>
|
||
|
|
<li><a href="#Fl_Window.hotspot">hotspot</a>
|
||
|
|
<li><a href="#Fl_Window.iconize">iconize</a>
|
||
|
|
<li><a href="#Fl_Window.iconlabel">iconlabel</a>
|
||
|
|
<li><a href="#Fl_Window.label">label</a>
|
||
|
|
<li><a href="#Fl_Window.make_current">make_current</a>
|
||
|
|
</ul>
|
||
|
|
</td>
|
||
|
|
<td align=left valign=top>
|
||
|
|
<ul>
|
||
|
|
<li><a href="#Fl_Window.modal">modal</a>
|
||
|
|
<li><a href="#Fl_Window.next_window">next_window</a>
|
||
|
|
<li><a href="#Fl_Window.non_modal">non_modal</a>
|
||
|
|
<li><a href="#Fl_Window.resize">resize</a>
|
||
|
|
<li><a href="#Fl_Window.set_modal">set_modal</a>
|
||
|
|
</ul>
|
||
|
|
</td>
|
||
|
|
<td align=left valign=top>
|
||
|
|
<ul>
|
||
|
|
<li><a href="#Fl_Window.set_non_modal">set_non_modal</a>
|
||
|
|
<li><a href="#Fl_Window.show">show</a>
|
||
|
|
<li><a href="#Fl_Window.shown">shown</a>
|
||
|
|
<li><a href="#Fl_Window.size_range">size_range</a>
|
||
|
|
<li><a href="#Fl_Window.xclass">xclass</a>
|
||
|
|
</ul>
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
</center>
|
||
|
|
|
||
|
|
<h4><a name="Fl_Window.Fl_Window">Fl_Window::Fl_Window(int x, int y, int w, int h, const char *title = 0)<br>
|
||
|
|
Fl_Window::Fl_Window(int w, int h, const char *title = 0)</a></h4>
|
||
|
|
|
||
|
|
The first constructor takes 4 int arguments to create the window with
|
||
|
|
a preset position and size. The second constructor with 2 arguments
|
||
|
|
will create the window with a preset size, but the window manager
|
||
|
|
will choose the position according to it's own whims.
|
||
|
|
|
||
|
|
<p><tt>Fl_Widget::box()</tt> is set to <tt>FL_FLAT_BOX</tt>. If you
|
||
|
|
plan to completely fill the window with children widgets you should
|
||
|
|
change this to <tt>FL_NO_BOX</tt>. If you turn the window border off
|
||
|
|
you may want to change this to <tt>FL_UP_BOX</tt>.
|
||
|
|
|
||
|
|
<h4><a name="Fl_Window.~Fl_Window">virtual Fl_Window::~Fl_Window()</a></h4>
|
||
|
|
|
||
|
|
The destructor <i>also deletes all the children</i>. This allows a
|
||
|
|
whole tree to be deleted at once, without having to keep a pointer to all
|
||
|
|
the children in the user code. A kludge has been done so the
|
||
|
|
<tt>Fl_Window</tt> and all of it's children can be automatic (local)
|
||
|
|
variables, but you must declare the <tt>Fl_Window</tt> <i>first</i>, so
|
||
|
|
that it is destroyed last.
|
||
|
|
|
||
|
|
<h4><a name="Fl_Window.size_range">void Fl_Window::size_range(int minw, int minh, int maxw=0, int maxh=0, int dw=0, int dh=0, int aspect=0)</a></h4>
|
||
|
|
|
||
|
|
Set the allowable range the user can resize this window to. This only
|
||
|
|
works for top-level windows.
|
||
|
|
|
||
|
|
<ul>
|
||
|
|
<li><tt>minw</tt> and <tt>minh</tt> are the smallest the window
|
||
|
|
can be.
|
||
|
|
|
||
|
|
<li><tt>maxw</tt> and <tt>maxh</tt> are the largest the window
|
||
|
|
can be. If either is <i>equal</i> to the minimum then you
|
||
|
|
cannot resize in that direction. If either is zero
|
||
|
|
then FLTK picks a maximum size in that direction such that the
|
||
|
|
window will fill the screen.
|
||
|
|
|
||
|
|
<li><tt>dw</tt> and <tt>dh</tt> are size increments. The
|
||
|
|
window will be constrained to widths of <tt>minw + N * dw</tt>,
|
||
|
|
where <tt>N</tt> is any non-negative integer. If these are
|
||
|
|
less or equal to 1 they are ignored.
|
||
|
|
|
||
|
|
<li><tt>aspect</tt> is a flag that indicates that the window should
|
||
|
|
preserve it's aspect ratio. This only works if both the maximum and
|
||
|
|
minimum have the same aspect ratio.
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
If this function is not called, FLTK tries to figure out the range
|
||
|
|
from the setting of <a href="#Fl_Group.resizable"><tt>resizeable()</tt></a>:
|
||
|
|
|
||
|
|
<ul>
|
||
|
|
<li>If <tt>resizeable()</tt> is <tt>NULL</tt> (this is the
|
||
|
|
default) then the window cannot be resized and the resize
|
||
|
|
border and max-size control will not be displayed for the
|
||
|
|
window.
|
||
|
|
|
||
|
|
<li>If either dimension of <tt>resizeable()</tt> is less than
|
||
|
|
100, then that is considered the minimum size. Otherwise the
|
||
|
|
<tt>resizeable()</tt> has a minimum size of 100.
|
||
|
|
|
||
|
|
<li>If either dimension of <tt>resizeable()</tt> is zero, then
|
||
|
|
that is also the maximum size (so the window cannot resize in
|
||
|
|
that direction).
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
It is undefined what happens if the current size does not fit in
|
||
|
|
the constraints passed to <tt>size_range()</tt>.
|
||
|
|
|
||
|
|
<h4><a name="Fl_Window.show">virtual void Fl_Window::show()<br>
|
||
|
|
int Fl_Window::show(int argc, char **argv, int i)<br>
|
||
|
|
void Fl_Window::show(int argc, char **argv)</a></h4>
|
||
|
|
|
||
|
|
Put the window on the screen. Usually this has the side effect of
|
||
|
|
opening the display. The second two forms are used for top-level
|
||
|
|
windows and allow standard arguments to be parsed from the
|
||
|
|
command-line.
|
||
|
|
|
||
|
|
<p>If the window is already shown then it is restored and raised to the
|
||
|
|
top. This is really convenient because your program can call
|
||
|
|
<tt>show()</tt> at any time, even if the window is already up. It also
|
||
|
|
means that <tt>show()</tt> serves the purpose of <tt>raise()</tt> in
|
||
|
|
other toolkits.
|
||
|
|
|
||
|
|
<h4><a name="Fl_Window.hide">virtual void Fl_Window::hide()</a></h4>
|
||
|
|
|
||
|
|
Remove the window from the screen. If the window is already hidden or
|
||
|
|
has not been shown then this does nothing (and is harmless). <i>Under the
|
||
|
|
X Window System this actually destroys the xid</i>.
|
||
|
|
|
||
|
|
<h4><a name="Fl_Window.shown">int Fl_Window::shown() const</a></h4>
|
||
|
|
|
||
|
|
Returns non-zero if <tt>show()</tt> has been called (but not <tt>hide()</tt>).
|
||
|
|
You can tell if a window is iconified with <tt>(w->shown() && !w->visible())</tt>.
|
||
|
|
|
||
|
|
<h4><a name="Fl_Window.iconize">void Fl_Window::iconize()</a></h4>
|
||
|
|
|
||
|
|
Iconifies the window. If you call this when <tt>shown()</tt> is false
|
||
|
|
it will <tt>show()</tt> it as an icon. If the window is already
|
||
|
|
iconified this does nothing.
|
||
|
|
|
||
|
|
<p>Call <tt>show()</tt> to restore the window.
|
||
|
|
|
||
|
|
<p>When a window is iconified/restored (either by these calls or by the
|
||
|
|
user) the <tt>handle()</tt> method is called with <tt>FL_HIDE</tt> and
|
||
|
|
<tt>FL_SHOW</tt> events and <tt>visible()</tt> is turned on and off.
|
||
|
|
|
||
|
|
<p>There is no way to control what is drawn in the icon except with the
|
||
|
|
string passed to <tt>Fl_Window::xclass()</tt>. You should not rely on
|
||
|
|
window managers displaying the icons.
|
||
|
|
|
||
|
|
<h4><a name="Fl_Window.first_window">Fl_Window *Fl::first_window()</a></h4>
|
||
|
|
|
||
|
|
Returns the first <tt>shown()</tt> window in the widget hierarchy.
|
||
|
|
If no windows are displayed <tt>first_window</tt> returns <tt>NULL</tt>.
|
||
|
|
|
||
|
|
<h4><a name="Fl_Window.next_window">Fl_Window *Fl::next_window(const Fl_Window*)</a></h4>
|
||
|
|
|
||
|
|
Returns the next <tt>shown()</tt> window in the hierarchy. You can use this
|
||
|
|
call to iterate through all the windows that are shown().
|
||
|
|
|
||
|
|
<h4><a name="Fl_Window.resize">void Fl_Window::resize(int,int,int,int)</a></h4>
|
||
|
|
|
||
|
|
Change the size and position of the window. If <tt>shown()</tt> is
|
||
|
|
true, these changes are communicated to the window server (which may
|
||
|
|
refuse that size and cause a further resize). If <tt>shown()</tt> is
|
||
|
|
false, the size and position are used when <tt>show()</tt> is called.
|
||
|
|
See <a href="#Fl_Group"><tt>Fl_Group</tt></a> for the effect of
|
||
|
|
resizing on the child widgets.
|
||
|
|
|
||
|
|
<p>You can also call the <tt>Fl_Widget</tt> methods <tt>size(x,y)</tt>
|
||
|
|
and <tt>position(w,h)</tt>, which are inline wrappers for this virtual
|
||
|
|
function.
|
||
|
|
|
||
|
|
<h4><a name="Fl_Window.free_position">void Fl_Window::free_position()</a></h4>
|
||
|
|
|
||
|
|
Undoes the effect of a previous <tt>resize()</tt> or <tt>show()</tt> so
|
||
|
|
that the next time <tt>show()</tt> is called the window manager is free
|
||
|
|
to position the window.
|
||
|
|
|
||
|
|
<h4><a name="Fl_Window.hotspot">void Fl_Window::hotspot(int x, int y, int offscreen = 0)<br>
|
||
|
|
void Fl_Window::hotspot(const Fl_Widget*, int offscreen = 0)<br>
|
||
|
|
void Fl_Window::hotspot(const Fl_Widget& p, int offscreen = 0)</a></h4>
|
||
|
|
|
||
|
|
<tt>position()</tt> the window so that the mouse is pointing at the
|
||
|
|
given position, or at the center of the given widget, which may be the
|
||
|
|
window itself. If the optional <tt>offscreen</tt> parameter is
|
||
|
|
non-zero, then the window is allowed to extend off the screen (this
|
||
|
|
does not work with some X window managers).
|
||
|
|
|
||
|
|
<h4><a name="Fl_Window.fullscreen">void Fl_Window::fullscreen()</a></h4>
|
||
|
|
|
||
|
|
Makes the window completely fill the screen, without any window manager
|
||
|
|
border visible. You must use <tt>fullscreen_off()</tt> to undo this.
|
||
|
|
This may not work with all window managers.
|
||
|
|
|
||
|
|
<h4><a name="Fl_Window.fullscreen_off">int Fl_Window::fullscreen_off(int x, int y, int w, int h)</a></h4>
|
||
|
|
|
||
|
|
Turns off any side effects of <tt>fullscreen()</tt> and does
|
||
|
|
<tt>resize(x,y,w,h)</tt>.
|
||
|
|
|
||
|
|
<h4><a name="Fl_Window.border">int Fl_Window::border(int)<br>
|
||
|
|
uchar Fl_Window::border() const</a></h4>
|
||
|
|
|
||
|
|
Gets or sets whether or not the window manager border is around the
|
||
|
|
window. The default value is true. <tt>border(n)</tt> can be used to
|
||
|
|
turn the border on and off, and returns non-zero if the value has been
|
||
|
|
changed. <i>Under most X window managers this does not work after
|
||
|
|
<tt>show()</tt> has been called, although SGI's 4DWM does work.</i>
|
||
|
|
|
||
|
|
<h4><a name="Fl_Window.clear_border">void Fl_Window::clear_border()</a></h4>
|
||
|
|
|
||
|
|
<tt>clear_border()</tt> is a fast inline function to turn the border
|
||
|
|
off. It only works before <tt>show()</tt> is called.
|
||
|
|
|
||
|
|
<h4><a name="Fl_Window.set_modal">void Fl_Window::set_modal()</a></h4>
|
||
|
|
|
||
|
|
A "modal" window, when <tt>shown()</tt>, will prevent any events from
|
||
|
|
being delivered to other windows in the same program, and will also
|
||
|
|
remain on top of the other windows (if the X window manager supports
|
||
|
|
the "transient for" property). Several modal windows may be shown at
|
||
|
|
once, in which case only the last one shown gets events. You can see
|
||
|
|
which window (if any) is modal by calling <a
|
||
|
|
href="#modal"><tt>Fl::modal()</tt></a>.
|
||
|
|
|
||
|
|
<h4><a name="Fl_Window.modal">uchar Fl_Window::modal() const</a></h4>
|
||
|
|
|
||
|
|
Returns true if this window is modal.
|
||
|
|
|
||
|
|
<h4><a name="Fl_Window.set_non_modal">void Fl_Window::set_non_modal()</a></h4>
|
||
|
|
|
||
|
|
A "non-modal" window (terminology borrowed from Microsoft Windows) acts
|
||
|
|
like a <tt>modal()</tt> one in that it remains on top, but it has no
|
||
|
|
effect on event delivery. There are <i>three</i> states for a window:
|
||
|
|
modal, non-modal, and normal.
|
||
|
|
|
||
|
|
<h4><a name="Fl_Window.non_modal">uchar Fl_Window::non_modal() const</a></h4>
|
||
|
|
|
||
|
|
Returns true if this window is modal or non-modal.
|
||
|
|
|
||
|
|
<h4><a name="Fl_Window.label">void Fl_Window::label(const char*)<br>
|
||
|
|
const char* Fl_Window::label() const</a></h4>
|
||
|
|
|
||
|
|
Gets or sets the window title bar label.
|
||
|
|
|
||
|
|
<h4><a name="Fl_Window.iconlabel">void Fl_Window::iconlabel(const char*)<br>
|
||
|
|
const char* Fl_Window::iconlabel() const</a></h4>
|
||
|
|
|
||
|
|
Gets or sets the icon label.
|
||
|
|
|
||
|
|
<h4><a name="Fl_Window.xclass">void Fl_Window::xclass(const char*)<br>
|
||
|
|
const char* Fl_Window::xclass() const</a></h4>
|
||
|
|
|
||
|
|
A string used to tell the system what type of window this is.
|
||
|
|
Mostly this identifies the picture to draw in the icon. <i>Under X,
|
||
|
|
this is turned into a <tt>XA_WM_CLASS</tt> pair by truncating at the
|
||
|
|
first non-alphanumeric character and capitalizing the first character,
|
||
|
|
and the second one if the first is 'x'. Thus "foo" turns into "foo,
|
||
|
|
Foo", and "xprog.1" turns into "xprog, XProg".</i> This only works if
|
||
|
|
called <i>before</i> calling <tt>show()</tt>.
|
||
|
|
|
||
|
|
<p>This method has no effect under Microsoft Windows.
|
||
|
|
|
||
|
|
<h4><a name="Fl_Window.make_current">void Fl_Window::make_current()</a></h4>
|
||
|
|
|
||
|
|
<tt>make_current()</tt> sets things up so that the drawing functions in
|
||
|
|
<a href="#Drawing"><tt><FL/fl_draw.H></tt></a> will go into this
|
||
|
|
window. This is useful for incremental update of windows, such as in an
|
||
|
|
idle callback, which will make your program behave much better if it
|
||
|
|
draws a slow graphic. <b>Danger: incremental update is very hard to
|
||
|
|
debug and maintain!</b>
|
||
|
|
|
||
|
|
<p>This method only works for the <tt>Fl_Window</tt> and <tt>Fl_Gl_Window</tt>
|
||
|
|
classes.
|
||
|
|
|
||
|
|
<h4><a name="Fl_Window.current">static Fl_Window* Fl_Window::current()</a></h4>
|
||
|
|
|
||
|
|
Returns the last window that was made current.
|
||
|
|
|
||
|
|
</body>
|
||
|
|
</html>
|