I've got a little problem. On a button press I need to open a panel with settings in animation. The thing is when I reduce width and height of a parent object (panel) it does not hide the child objects whatsoever. How can I make the parent object to influence the children's height and width when I change them in the parent?
If these objects are UI elements you can use add a Mask to the panel to hide any child objects that go outside of the area of the panel. As you can see below the square which is a child of the panel object does not render anything outside of the area of the panel.
If you want the UI elements to scale with the changing size of the panel then you should use anchors which will mean that the children of the panel will "anchor" themselves to the positions you set. Here's a short gif to illustrate how it works.
That's with the child image set to preserve it's aspect ratio, if you disable that setting then the box will stretch to perfectly fit the anchors.
If you want to scale your child objects with your parent canvas, you should set your render mode -> world space in your parent object.
Related
Currently I have a panel, which has a dynamic number of children. I want to make children to expand (to defined max height) or shrink to fit it's parent panel.
The problem:
Basically, I want those images to scale down, just to fit the panel above.
Maybe you want to use Vertical Layout Group on your parent object ?
I wonder why the child control cannot be scrolled even though it cannot fit its container.
Here is my simple example of the layout:
I have orange panel and green panel inside. Orange panel has AutoScroll set to true.
Green panel is docked to top and has minimum width = 150.
Why the horizontal scrollbar doesn't appear on orange panel?
Without DockStyle=Top everything works fine. I could use Anchors, but I feel more comfortable with docking when creating more complex layouts with many groupboxes and panels stacked on each other.
I also don't like using AutoScrollMinSize because it sets the limit regardless of what controls are currently visible on the form.
The question is why does it work this way?
P.S. Just let me know if this is by design and there is no other way except Anchors on green panel or AutoScrollMinSize on orange panel. It seems weird to me that it cannot display the scrollbar in that case even though you have child control that cannot fit into its parent and parent has AutoScroll=true. I guess the layout engine doesn't even bother calculating the actual width of the docked control because in theory it is stretched to whatever parent width you have.
It looks like this is by design. I checked the code of the ScrollableControl from which Panel and therefore other containers like TableLayoutPanel and FlowLayoutPanel are inherited.
The horizontal scrollbar will not be checked if the child control has:
Dock=Top|Bottom|Fill|Right or Anchor=Right or Anchor!=Left
And the same picture is for vertical scrollbar, it is ignored when the child control has:
Dock=Left|Bottom|Fill|Right or Anchor=Bottom or Anchor!=Top
There is nothing much I can do except using AutoScrollMinSize or right combination of anchors.
I have used a user control as a base class (let's call it BaseUC) with 3 labels (in 3 lines) on it (they are set as protected).
And there is another user control that inherits from it (InheritedUC). I have added two more labels in InheritedUC, which are positioned between the base's labels (so there are 5 lines).
Everything is fine is Visiual Studio's design UI view. But when I run the application, labels on BaseUC overlap with the ones in InheritedUC and I can't see the ones on the inherited control.
Any ideas to fix this? Thank you very much
From MSDN: Control.Anchor Property
Use the Anchor property to define how a control is automatically
resized as its parent control is resized. Anchoring a control to its
parent control ensures that the anchored edges remain in the same
position relative to the edges of the parent control when the parent
control is resized.
You can anchor a control to one or more edges of its container. For
example, if you have a Form with a Button whose Anchor property value
is set to Top and Bottom, the Button is stretched to maintain the
anchored distance to the top and bottom edges of the Form as the
Height of the Form is increased.
Set the Anchor property on all labels:
For example:
label1.Anchor = AnchorStyles.Top | AnchorStyles.Left;
If you put your controls in a FlowLayoutPanel and set the following options:
AutoScroll = True
FlowDirection = TopDown
WrapContents = False
Then you should get panel that will grow and shrink as your controls are added or removed.
Source
I am attempting to add three panels to a window using a Devexpress Docking manager and dockable panels. Here are the current results:
The three panels are placed and sized how I would like them however their contents will not correctly resize as I resize the window. This first image indicates this by the Picturebox that fails to fill the window. My current attempt to regulate this is: (Panel3 refers to a panel that contains pictureBox1. which in turn is contained by dp3.)
void dp3_SizeChanged(object sender, EventArgs e)
{
panel3.Size = panel3.Parent.Size;
pictureBox1.Width = dp3.Width;
pictureBox1.Height = dp3.Height;
}
The Same is true for the Controls Window. I have controls that do not appear unless the window is grossly oversized.
The controls are contained in 4 seperate panels that are themselves contained in the dockable window.
How do I make things appear the correct size and location whendocking and resizing?
Go throught this DevX article - Designing Resizable Windows Forms in
Visual Studio .NET-2,
that i like most for understanding about layout in Winforms.
You should set the Anchor and Dock properties on the controls in the forms.
The Anchor property controls which edges of a control are "bound" or "tied" to the corresponding edges of its form.
For example, if you set Anchor to Bottom, the distance between the control's bottom edge and the bottom of its parent will not change, so the control will move down as you resize the form.
If you set Anchor to Top | Bottom, the control will resize vertically as you resize the form.
To make a control resize with the form, set the Anchor to all four sides, or set Dock to Fill.
You can set the control's Dock property to Fill. This will cause the control to fill it's parent container.
You may still need to write some code to handle laying out the child controls. You can either do this by handling the Resize event, or by using a container that supports resizing for you (such as FlowLayoutPanel or TableLayoutPanel).
Use your Control's Anchor property. You'll probably need to set it to all sides, Top, Bottom, Left, Right, if you want it to resize according to parent control in all four directions
If you want to Maintain the controls Aspect Ratio on Resize, You'll need to store off the aspect ratio somehow, whether it's something known to you at design time or if you just want to calculate it in the constructor of the form after InitializeComponent(). In your form's Resize event,
I am working on a largish C# project with a lot of Windows Forms forms that, even though you can resize the form, the elements in the form don't scale.
How can I make the form elements (such as the datagridview, text area's, etc.) scale when the user changes the size of the form?
Nearly all the forms subclass from one specific form, so if there's something I can do in the base class, that'd be great.
You should set the Anchor and Dock properties on the controls in the forms.
The Anchor property controls which edges of a control are "bound" or "tied" to the corresponding edges of its form.
For example, if you set Anchor to Bottom, the distance between the control's bottom edge and the bottom of its parent will not change, so the control will move down as you resize the form.
If you set Anchor to Top | Bottom, the control will resize vertically as you resize the form.
To make a control resize with the form, set the Anchor to all four sides, or set Dock to Fill.
Use the Anchor and Dock properties.
Anchor allows you to pin specific sides of the control to the sides of the parent control.
Dock will bind the whole control to a side of the parent control or it can be set to fill the contents of the parent control.
You usually just need to set the Anchor to the bottom and right of the parent control but gets more difficult when you have controls side by side, then you need to manually resize the controls on the forms OnResize event to get them to scale naturally together.