I need to display a tiled image as BackgroundImage in a RadSplitButton, but when I set the BackgroundImage property it is ignored by the control
In the other hand, the Image property works as normally, but I need to set the BackgroundImage property.
Why this property is ignored by default, and how to fix it?.
RadSplitButton is in fact built of three different elements - action button, separator and arrow button. Each of these elements is built of other elements (fills, borders, etc). All controls in the suite are built with the Telerik Presenation Framework and consist of multiple elements to allow greater flexibility. This way for example you can set different image/color for different elements - action part and the arrow part of the button.
In this case, the BackgroundImage is painted on the control, however, the element's fills are painted over it, hence it is not visible. Here is how to hide the fills in order to see the BackgroundImage:
radSplitButton1.DropDownButtonElement.ActionButton.ButtonFillElement.Visibility = ElementVisibility.Collapsed;
radSplitButton1.DropDownButtonElement.ArrowButton.Fill.Visibility = ElementVisibility.Collapsed;
radSplitButton1.DropDownButtonElement.ButtonSeparator.DrawBorder = false;
I see that you also want to see the theme. This however, would not be possible as you cannot see both the image and the fill, as if you see the fill, the image is hidden. Perhaps you can use the MouseEnter and MouseLeave event to apply different image for hover?
Related
Fore note: I know you cannot use a margin with dock, but I am trying to figure a way around this.
I have two objects, a GroupBox (containing loads of buttons and stuff that will always be the same size no matter how big / small the form) and a WebBrowser. The former will take up roughly 100 pixels at the top, and the latter will take up the rest of the space. I have tried multiple ways to get around this, including Panels, GroupBoxs, changing Anchors and Docks, but nothing is working. I know there is a simple solution for this, but I cannot work it out. Could someone point me in the right direction for what I should be using?
P.S. New to WinForms so not very knowledgeable of things.
Start with a TableLayoutPanel control on your Form and set its Dock() property to Fill. Now change the ColumnCount() property to 1, and leave the RowCount() property at 2.
Add your GroupBox to the Top Row and adjust its size. Add your WebBrowser control to the Bottom Row and set its Dock() property to Fill.
Finally, select the TableLayoutPanel, find the Rows() property, and click on the "..." dots to the right. Select Row1 and change its Size Type to AutoSize.
Done!
Alternative Approach...
Add your GroupBox to the Form and set its Dock() property to Top. Add your WebBrowser control and set its Dock() property to Fill. Note with this approach, however, that the GroupBox will extend to fill the full width of the Form.
I have a C# WinForms application I am developing with Visual Studio 2010. My application has a custom control (User Control). When I am designing the custom control here is what it looks like:
Note the very narrow space between the image, label, and combo box.
When I add the custom control to my main form here is what it looks like:
Notice how much more space there is between the controls as compared to the spacing in the first image.
I have no idea where this extra spacing is coming from. It's as if the margin/padding between the controls is getting multiplied by some scale factor of which I have no idea how it's determined.
I have tried changing the padding/margins on both the custom control and the main form but nothing seems to work.
Does anyone know why this extra space shows up?
Thank you.
I can see only two reasons for such behavior - either you have wrong Dock / Anchor settings (issue is reproduced when you have Dock set to None and Anchor to Top only), or your image, label and combobox are sitting in cells of some other control, like TableLayoutPanel which adjusts width of cells. Thus you don't have any additional container, then check very carefully Dock and Anchor settings of each of the controls (image, label and combobox). Also check if you change these properties at runtime (also check Margin, Location and Padding).
I have made a TabControl and want to use some controls (labels, textboxes, buttons and combobox drop-downs). The problem is that when I select a tab, the default background color is not the same as the default background color of the form the controls used to be on. The color of the tab and the controls are too similar and it doesn't look good.
I have looked, but people seem to say that it's impossible to color tabs. What is a good solution to this? Should I put some kind of frame, label or something else inside the tab to make the background darker?
It's easy to get your tab pages to use the same background color as your form:
Make sure that the TabPage you want to change is visible in the designer. Click on it to select it.
In the Properties Window, find the UseVisualStyleBackColor property, and set it to False.
And as a bonus, once you've set this property to False, you can specify any background color that you want for the TabPage using its BackColor property.
The reason that this works is that you're forcing the tab page not to render with visual styles (i.e., themes as defined by Windows). The default theme actually paints tab pages a slightly lighter shade of the color used to paint other 3D elements (like forms and buttons). The problem (under the Aero theme in particular) is that the color of the standard 3D elements is so light already that the tab pages almost look white!
If you're satisfied with the contrast of the controls against the standard background color of your form, I suggest that you simply set the UseVisualStyleBackColor property to False and leave it at that without specifying a custom background color. Respecting the user's default theme is generally the best practice, rather than trying to skin an application yourself.
EDIT: Note that this will not change the color of the tabs themselves at the top of the TabControl. To do that, you're going to have to specify it as owner-drawn and handle its DrawItem event, forcing you to do all of the painting yourself. In most cases, however, this is not necessary.
I'm developing an app for Windows Mobile 5.0 and above, with C# and .NET Compact Framework 2.0 SP2.
I have a WinForm with two panels inside (upperPanel and bottomPanel). I want that upperPanel always fill 2/3 of form's height, and bottomPanel fills 1/3 of form's height. Both panels will fill completly form's width.
I've used this:
upperPanel.Dock = Fill;
bottomPanel.Dock = Bottom;
But upperPanel fills the form completly.
How can I do this? I want, more o less, the same gui on differents form factors and on landscape or protrait mode.
Thank you.
What you need to do is to put the bottom panel on first and set its Dock property to Bottom. Then set the panel's height to be 1/3 of the form's height. Finally, add a second panel and set its Dock property to Fill. The key here is that you want to add the control that will fill the remaining area to be added last. Alternatively, you can play around with the Bring to Front and Send to Back commands in Visual Studio to get the designer to cooperate.
You may also need to hook the OnSizeChanged event for the form and re-set the height of the bottom panel to account for layout changes. It's been a little while since I did compact framework programming, so I'm not sure.
Right click on the upperPanel and select Bring To Front. However, I don't think this will give you the result you want. When you resize, the bottom panel will remain the same height, while the upper panel will stretch to fill the form.
Using your docking settings, with this code might do the trick:
protected override void OnSizeChanged(EventArgs e)
{
base.OnSizeChanged(e);
this.bottomPanel.Height = Convert.ToInt32((double)this.Height / 3.0);
}
Set both panels to "not anchored". That is: Remove Dock-Value and clear the Anchor property. Then, move the controls so they are sized the way you'd like them to be sized.
After that, upon resizing the form, they should resize relatively.
EDIT
Oops, just tried it and sure it doesn't work. I mixed this up with a solution that automatically keeps controls centered within the window...
Well, I'd guess you then have to create a handler for the form's Resize event and manually align the controls after the form has been resized.
Go to Tools, Other Windows, Document Outline. Find the two panels, and swap the order of them. The control that has DockStyle.Fill has to come first for it to be docked correctly. (or last.. never sure which one it is, but it is one of them :p)
This won't solve the always 1/3 and 2/3 issue though... cause the bottom panel will have a fixed height (unless I am mistaken). I think maybe the TableLayoutPanel supports this though...
Update: As noted in the comments, that panel doesn't exist in the compact framework. So, I suppose the easiest solution to this problem would then try to use the docking, but update the height of the bottom panel whenever the size of the form changes.
If you want this to work perfectly you'll need to add some code to the Resize event of the Form which then specifically works out the relative sizes and places the controls in the correct place after a resize.
If you're not worried about losing precision and the forms aren't going to move much you can avoid this by using some relatively smart anchoring. Essentially you're going to have to select a "grower" (the part of the form that gets bigger, the bigger the form gets). In this scenario I would probably anchor the top part to Top | Left | Right and the bottom part to Top | Left | Right | Bottom. This would mean that the lower part of the form will get bigger if the form is expanded. In most cases this is acceptable. If it isn't use the Resize event and some code.
The easiest way to do this is to nest panels. Just set up panels for top bottom and fill. Then use panels within those panels to do the same. The only issues I've had therein are datagrid resizing, which is always a pain anyway. in that case, you have to use some code to resize the datagrid control on the form resize event.
I would like to add a point to #jasonh answer.
For the panel that occupies 2/3 of the form, you will have to set the AutoScroll property of the panel to true.
This will enable the panel to display scroll when the control size exceed the visibility to the user and also ensure the visibility of the smaller panel which is 1/3 of the forms height.
You can get the required design by using nested panels along with few setting with Anchoring and Docking Properties.Follow the following steps:
1) Add the Form and put a Panel1 on it. Set its Dock Property as 'Fill' and ResizeMode as 'Grow&Shrink'.
2) Add Second panel2 and set its Dock Property to 'Bottom', Set the Height and set the Anchor property to 'Top,Left'.
3)Add Third panel and set its Dock Property to 'None', Set the Height and set the Anchor property to 'Top,Bottom,Left,Right'.
Save and Compile. Now all the panels Would maintain their relative Positioning With resizing.
I have a user control that has:
a) a buttons panel at the top (it always has to be visible)
b) a panel with controls that are dynamically added and re-sized at run-time. The controls can be many, so the panel has to be scrollable.
This user control will be hosted in a form, with the following requirements:
a) The initial size of the form will try to fit in maximum part of the dynamic content.
b) On changing the form size, the control has to be re-sized accordingly.
I had played with various anchoring, docking, and auto-sizing and I don't quite get it working in the way I want to. Sometimes, it is the scrolling that messes up, sometimes it is something else.
What combination of anchoring, docking, and auto-sizing of the panels, usercontrol, form should work best to achieve the desired outcome?
I succeeded to meet the requirements. Here is my solution:
The dynamic panel is anchored to the top and the bottom of the control. It does not AutoSize, it manually changes its MaximumSize and PreferredSize after change in the contents.
The form hosts the form using:
cntrl.AutoSize = true;
cntrl.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink;
cntrl.Dock = System.Windows.Forms.DockStyle.Fill;
The form subscribes to a custom control's event that notifies for the preferredHeight and it changes its own Height accordingly.
I'd go with a table layout panel. You can specify two rows by one column with the exact size for the buttons at the top and fill the rest with the bottom. Then put put either a normal panel or a flowlayoutpanel for the dynamic content in that area.
Without knowing the specifics of your problem I find multiple fill docked split containers with one fixed panel and/or a fixed slider usually creates a really handy resizing experience. You can also collapse panels very effectively too.