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Diffstat (limited to 'documentation/Fl_Overlay_Window.html')
| -rw-r--r-- | documentation/Fl_Overlay_Window.html | 42 |
1 files changed, 21 insertions, 21 deletions
diff --git a/documentation/Fl_Overlay_Window.html b/documentation/Fl_Overlay_Window.html index 43401ec12..1a838196d 100644 --- a/documentation/Fl_Overlay_Window.html +++ b/documentation/Fl_Overlay_Window.html @@ -17,14 +17,14 @@ </PRE> </UL> <H3>Description</H3> - This window provides double buffering and also the ability to draw the -"overlay" which is another picture placed on top of the main image. The -overlay is designed to be a rapidly-changing but simple graphic such as -a mouse selection box. <TT>Fl_Overlay_Window</TT> uses the overlay -planes provided by your graphics hardware if they are available. -<P>If no hardware support is found the overlay is simulated by drawing -directly into the on-screen copy of the double-buffered window, and -"erased" by copying the backbuffer over it again. This means the + This window provides double buffering and also the ability to draw the +"overlay" which is another picture placed on top of the main image. The +overlay is designed to be a rapidly-changing but simple graphic such as +a mouse selection box. <TT>Fl_Overlay_Window</TT> uses the overlay +planes provided by your graphics hardware if they are available. +<P>If no hardware support is found the overlay is simulated by drawing +directly into the on-screen copy of the double-buffered window, and +"erased" by copying the backbuffer over it again. This means the overlay will blink if you change the image in the window. </P> <H3>Methods</H3> <UL> @@ -34,23 +34,23 @@ overlay will blink if you change the image in the window. </P> <LI><A href=#Fl_Overlay_Window.redraw_overlay>redraw_overlay</A></LI> </UL> <H4><A name=Fl_Overlay_Window.Fl_Overlay_Window> -Fl_Overlay_Window::Fl_Overlay_Window(int x, int y, int w, int h, const +Fl_Overlay_Window::Fl_Overlay_Window(int x, int y, int w, int h, const char *label = 0)</A></H4> - Creates a new <TT>Fl_Overlay_Window</TT> widget using the given -position, size, and label (title) string. -<H4><A name=Fl_Overlay_Window.~Fl_Overlay_Window>virtual + Creates a new <TT>Fl_Overlay_Window</TT> widget using the given +position, size, and label (title) string. +<H4><A name=Fl_Overlay_Window.~Fl_Overlay_Window>virtual Fl_Overlay_Window::~Fl_Overlay_Window()</A></H4> - Destroys the window and all child widgets. -<H4><A name=Fl_Overlay_Window.draw_overlay>virtual void + Destroys the window and all child widgets. +<H4><A name=Fl_Overlay_Window.draw_overlay>virtual void Fl_Overlay_Window::draw_overlay() = 0</A></H4> - You must subclass <TT>Fl_Overlay_Window</TT> and provide this method. - It is just like a <TT>draw()</TT> method, except it draws the overlay. - The overlay will have already been "cleared" when this is called. You + You must subclass <TT>Fl_Overlay_Window</TT> and provide this method. + It is just like a <TT>draw()</TT> method, except it draws the overlay. + The overlay will have already been "cleared" when this is called. You can use any of the routines described in <A href=drawing.html#Drawing> -<FL/fl_draw.H></A>. +<FL/fl_draw.H></A>. <H4><A name=Fl_Overlay_Window.redraw_overlay>void Fl_Overlay_Window::redraw_overlay()</A> </H4> - Call this to indicate that the overlay data has changed and needs to -be redrawn. The overlay will be clear until the first time this is -called, so if you want an initial display you must call this after + Call this to indicate that the overlay data has changed and needs to +be redrawn. The overlay will be clear until the first time this is +called, so if you want an initial display you must call this after calling <TT>show()</TT>. </BODY></HTML> |