In the name of this class, “H” stands for “horizontal” because it can be used for scrolling columns of variable widths.
It is not necessary to know the widths of all columns in advance – only those which are shown on the screen need to be measured.
In any case, this is a generalization of Scrolled which can be only used when all columns have the same widths. It lacks some other Scrolled features however, notably it can’t scroll specific pixel sizes of the window or its exact client area size.
To use this class, you need to derive from it and implement the OnGetColumnWidth pure virtual method. You also must call SetColumnCount to let the base class know how many columns it should display, but from that moment on the scrolling is handled entirely by HScrolledWindow. You only need to draw the visible part of contents in your OnPaint() method as usual. You should use GetVisibleColumnsBegin and GetVisibleColumnsEnd to select the lines to display. Note that the device context origin is not shifted so the first visible column always appears at the point (0, 0) in physical as well as logical coordinates.
See also
__init__ | Default constructor, you must call Create later. |
Create | Same as the non-default constructor, but returns a status code: True if ok, False if the window couldn’t be created. |
In the name of this class, “H” stands for “horizontal” because it can be used for scrolling columns of variable widths.
Possible constructors:
HScrolledWindow()
HScrolledWindow(parent, id=ID_ANY, pos=DefaultPosition,
size=DefaultSize, style=0, name=PanelNameStr)
Overloaded Implementations:
__init__ (self)
Default constructor, you must call Create later.
__init__ (self, parent, id=ID_ANY, pos=DefaultPosition, size=DefaultSize, style=0, name=PanelNameStr)
This is the normal constructor, no need to call Create after using this constructor.
Parameters: |
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Note
HSCROLL is always automatically added to the style, there is no need to specify it explicitly.
Same as the non-default constructor, but returns a status code: True if ok, False if the window couldn’t be created.
Just as with the constructor, the HSCROLL style is always used, there is no need to specify it explicitly.
Parameters: | |
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Return type: | bool |