From 87dd7f0d23eba5c09e71ec6efeb34c6844f5e95f Mon Sep 17 00:00:00 2001 From: Michael R Sweet Date: Tue, 29 Dec 1998 14:21:17 +0000 Subject: Revised documentation files. git-svn-id: file:///fltk/svn/fltk/trunk@177 ea41ed52-d2ee-0310-a9c1-e6b18d33e121 --- documentation/Fl_Scrollbar.html | 78 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 documentation/Fl_Scrollbar.html (limited to 'documentation/Fl_Scrollbar.html') diff --git a/documentation/Fl_Scrollbar.html b/documentation/Fl_Scrollbar.html new file mode 100644 index 000000000..535831546 --- /dev/null +++ b/documentation/Fl_Scrollbar.html @@ -0,0 +1,78 @@ + + + +
+ +

class Fl_Scrollbar

+ +
+ +

Class Hierarchy

+ + + +

Include Files

+ + + +

Description

+ +The Fl_Scrollbar widget displays a slider with arrow buttons +at the ends of the scrollbar. Clicking on the arrows move up/left and +down/right by linesize(). Scrollbars also accept +FL_SHORTCUT events: the arrows move by linesize(), +and vertical scrollbars take Page Up/Down (they move by the page size +minus linesize()) and Home/End (they jump to the top or +bottom). + +

Scrollbars have step(1) preset (they always return +integers). If desired you can set the step() to non-integer +values. You will then have to use casts to get at the floating-point +versions of value() from Fl_Slider. + +

Methods

+ + + +

Fl_Scrollbar::Fl_Scrollbar(int x, int y, int w, int h, const char *label = 0)

+ +Creates a new Fl_Scrollbar widget using the given position, +size, and label string. You need to do type(FL_HORIZONTAL) if +you want a horizontal scrollbar. + +

virtual Fl_Scrollbar::~Fl_Scrollbar()

+ +Destroys the valuator. + +

int Fl_Scrollbar::linesize() const
+void Fl_Scrollbar::linesize(int i)

+ +This number controls how big the steps are that the arrow keys do. In +addition page up/down move by the size last sent to value() +minus one linesize(). The default is 16. + +

int Fl_Scrollbar::value()
+int Fl_Scrollbar::value(int position, int size, int top, int total)

+ +The first form returns the integer value of the scrollbar. You can get +the floating point value with Fl_Slider::value(). + +The second form sets value(), range(), and +slider_size() to make a variable-sized scrollbar. You should +call this every time your window changes size, your data changes size, +or your scroll position changes (even if in response to a callback from +this scrollbar). All necessary calls to redraw() are done. + + + -- cgit v1.2.3