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Top Forums Programming Help in memcmp (it may be a bug) Post 302610387 by jim mcnamara on Wednesday 21st of March 2012 07:59:41 AM
Old 03-21-2012
hello is 5 characters long. Not 20.

strcmp, strncmp and other similar functions are used to do string compares. A C string is terminated with a nul (ascii 0) character. This allows strcmp to determine the string's length and stop comparing. memcmp compares objects in memory. It does not check the length because it is meant to compare memory objects which often have ascii 0 characters.

You provide the length to memcmp. 20 is not the length of the word hello
 

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XmScrollVisible(library call)											     XmScrollVisible(library call)

NAME
XmScrollVisible -- A ScrolledWindow function that makes an invisible descendant of a ScrolledWindow work area visible SYNOPSIS
#include <Xm/ScrolledW.h> void XmScrollVisible( Widget scrollw_widget, Widget widget, Dimension left_right_margin, Dimension top_bottom_margin); DESCRIPTION
XmScrollVisible makes an obscured or partially obscured widget or gadget descendant of a ScrolledWindow work area visible. The function re- positions the work area and sets the specified margins between the widget and the nearest viewport boundary. The widget's location relative to the viewport determines whether one or both of the margins must be adjusted. This function requires that the XmNscrollingPolicy of the ScrolledWindow widget be set to XmAUTOMATIC. scrollw_widget Specifies the ID of the ScrolledWindow widget whose work area window contains an obscured descendant. widget Specifies the ID of the widget to be made visible. left_right_margin Specifies the margin to establish between the left or right edge of the widget and the associated edge of the viewport. This margin is established only if the widget must be moved horizontally to make it visible. top_bottom_margin Specifies the margin to establish between the top or bottom edge of the widget and the associated edge of the viewport. This margin is established only if the widget must be moved vertically to make it visible. For a complete definition of ScrolledWindow and its associated resources, see XmScrolledWindow(3) RELATED
XmScrolledWindow(3). XmScrollVisible(library call)
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