As you know, one can customize the width of the scrollbar width in Display Properties -> Appearance -> Advanced -> Item: ScrollBar. The default value is 17. However, I can't assume this is always the case, is it possible for me to retrieve this value?
Look at the System.Windows.Forms.SystemInformation class members: HorizontalScrollBarHeight and VerticalScrollBarWidth.
Vertical Scroll Bar Width
System.Windows.Forms.SystemInformation.VerticalScrollBarWidth;
If you want to know the size of a ScrollableControl minus the size of the scroll bar, the easiest way is to use the Control.ClientSize property.
From the documentation:
Gets or sets the height and width of the client area of the control.
The client area of a control is the bounds of the control, minus the nonclient elements such as scroll bars, borders, title bars, and menus.
Skip the ClientSize property of the control. At least in VS2013 the Scrollbar is included in the ClientSize.
When I formatted a RichTextBox with a width of 304 and a vertical scrollbar, the Client Size width was 300, which only accounted for the borders.
stick with the System.Windows.Forms.SystemInformation.VerticalScrollBarWidth to get your scrollbar width.
Related
I've got a DataGridView with the RowHeaderVisible property set to false;
I have the margins and padding set to 0;
then the size is equal to the header widths added together...
Why is there extra space still needed to show the full control? (There is a horizontal scroll bar visible) What property does this, or how would you get an accurate measurement of the exact (actual) sizing of the control?
I havent used one for a while but if its like a listview, the headers should be less than the width to leave space for the vertical scrollbar - presuming you have one. Try reducing the width of one of the headers, or increasing the control width
Currently I have some GridViewColumns that use Auto for their Width property, but this only seems to work on startup. After I add new values to the ListView, the GridViewColumns using Auto don't adjust their width.
Any idea on how to do this?
Wrongly understand your meaning ;(
you should set the width by code
Here you are: How to autosize and right-align GridViewColumn data in WPF?
fire it up to blend to ease your design process,
or click off the clips with "8" signs
then it will not drag follow with the size of window (in total of 4 clips and 4 sides)
also make the horizontal scroll bar become visible, then it will add up value and scrollable =D
What are the other columns sizes set to? If they are fixed then the Auto sized column will only be able to grow up to the maxwidth minus those column widths. Have you tried setting their column sizes to *?
-Matt
I'm writing a custom control that contains a list of items (child controls) that resize horizontally to fit the width of the control. If there are lots of items (or the control is resized so that it is not tall enough vertically) then a vertical scroll bar is necessary; but when the vertical scroll bar appears, the child controls are suddenly too wide, which causes a horizontal scroll bar to appear.
What's the proper way to guarantee that a horizontal scroll bar does not appear when it is not necessary, given that I am controlling the control placement manually (not relying on AnchorStyles)? (Note: I can't control the VScroll property manually because I'm on Compact Framework; and if an item's minimum width is wider than the client area then a horizontal scroll bar will be required legitimately.)
What I did in a similar situation was after every time I added an item to the list I detected whether the scroll bar was visible or not and adjusted my the width manually.
What I did to detect whether the scroll bar was showing was either:
Test for the WS_VSCROLL was set on the control via P/Invoke via GetWindowLong().
Scan the control's children for a vertical scroll bar control.
It depends on how the control handles scroll bars as to which one is correct.
Also this was on Windows, not in the CF so I'm not sure if this will work exactly the same way.
Take the width of the vertical scrollbar into account when calculating the required width for your child controls:
System.Windows.Forms.SystemInformation.VerticalScrollBarWidth
i have 3 custom controls, that i want to place in a resizable window next to each other. when the window is being resized, these controls should also resize, each taking 33% of the available width.
i tried to use a table layout, but it seems the table only grows, but never shrinks.
thanks for any help on this!
You can use a TableLayoutPanel, with 3 columns each of size "33% percent". Then you put each of your control in the panel, and set the anchor property as you wish (for example right-left if your control should resize themselves only on the horizontal plane).
Your TableLayoutPanel should also have its property Dock set to True so that he can occupy all your window and resize accordingly.
I have this:
Each list is its own WrapPanel and they are all on another WrapPanel which is in a ScrollViewer. If I don't set the height myself for the main WrapPanel it assumes I want the WrapPanel as high as it can go giving me only one column whereas I want as many columns as needed to fill the window.
If I set the Width and Height of the WrapPanel that holds everything to fixed numbers, but I want it to change when the user resizes the window.
In your example screen shot and description I see a tab control whose anchor is set to Top, Left, Bottom, and Right. The tab page with AutoScroll set to true. Within the tab page I see a FlowLayoutPanel. The FlowLayoutPanel has its AutoSize property set to true. I also see a set of other panels/user controls each of which contains a title and a series of check boxes.
You can`t achieve this with standard controls. You can try to create your own custom WrapPanel implementation. But, actually, looking at original WrapPanel sources I think this will be quite tricky. You see, what you want, is basically to measure how many columns can fit in the current window, while every element in column can be of any size. The way I see that algorithm, it will require N*N iterations to get the final result. So you may have problems with performance.