I have a custom control built of other controls that is being loaded in two different places. On one it appears the way it does in the designer, as expected, on the other it is being resized smaller without being instructed to do so. Even when I explicitly adjust the size in code the control appears to get bigger, but the controls within are still smaller than they should be. What could causing this to happen?
Any differences in the font size between the custom controls' containers (form, panel, etc.)?
See if setting your control's AutoScaleMode to Dpi helps.
Related
I've added a DateTimePicker control to my form:
Its size looks correct, however it's only the case until the point I change the format:
Now, I can manually resize it, however it will ruin the "Multi-DPI" situations, i.e when I move it across monitors with different DPI (different scale factor):
100%:
250%:
How can I ask this control to resize itself according to its contents?
I am C++ programmer, and I am working on a migration project where I need to convert C++ code to C# and I have little knowledge on C#. Also, Clients want the application in .net 2.0
Issue:
When the screen resolution changes to low resolution, the form is adding a scroll bar to show all the controls in the screen. But, Client wants without any scroll bar such that all the controls should be visible.
Font applied to the controls should fit to the control dimension even if we change the resolution to high or low.
Any suggestions?
Use containers to house your controls. TableLayoutPanel would probably be a good choice. Set the TableLayoutPanels DockStyle to Fill. TableLayoutPanels only allow you to put one Control in each section, but Panels allow multiples so put a Panel in each section and set each Panels DockStyle to Fill. Arrange your controls in the panels and set each controls Anchor or DockStyle properties to keep them in location. Now, set your resolution to the lowest possible setting and build your form. If you follow the above steps, when you raise the resolution everything will be in the same relative location with the same relative size.
Why it works: Setting the tablelayoutpanels DockStyle to Fill makes it autosize with the parent form. Setting each panels DockStyle makes it autosize with the TableLayoutPanels sections. Anchoring/Docking controls inside the panels keeps the controls sizing and spacing relative to the panel.
I have a form which have so many controls in an old winForms App
the client said he's using low screen resolution to easily manage this form
and now he want the controls and there font size to be big regardless of the screen resolution
if it's not an easy process is there any thing i can start with ?
Put this in the form's OnLoad override or Load event handler:
this.Font = new Font(this.Font.FontFamily, 1.25f * this.Font.Size);
Which takes advantage of the built-in autoscaling as configured by the AutoScaleMode property. Whether that will keep the layout intact is a unguessable, you'll have to try.
Your customer can do this too by increasing the video adapter's DPI setting. On Vista and up, going past 125% (120 dpi) triggers compatible DPI scaling. Which makes the OS lie about the DPI setting and produces a larger window through bitmap scaling. Makes it fuzzy but big enough to be usable.
You can change the style for each of the controls or you can create a style class and change your controls to consume it as shown in the following link: http://www.codeproject.com/KB/miscctrl/WinFormStyleSheet.aspx
Most winforms controls that display text have a FontHeight property which you can modify in order to set the permanent font height for that particular element. This is the most flexible solution where you can control which elements get the larger font treatment.
I have created some controls in C#, and am successfully using them. However, on user PC's with custom set (font) DPI to let's say 125 % or even 150 % -- My controls inherit the new scale, and do not display correctly.
I would like to know how to disable my control from inheriting this scale.
I know this is not the answer you would be looking for. But consider why people have their system set the way it is. it may be a vision problem or just their perference. Yes, handling the scaling diplay can be a pain, but that is better then a user disregarding your product because they can't read/use it.
If you're building your own application, you can set the AutoScaleMode property of a Form to "None" to disable the automatic resizing of the Form's font based on the system DPI setting.
If you're simply building a control that others will integrate into their own forms, you'll want to override the Font property of the control and force it to your pre-determined hardcoded value.
Also note that, as others have said, you don't want to do this -- the user has adjusted their system DPI for a reason, and overriding their choice is likely only going to make your control unusable to them. If the problem is merely that your control isn't scaling correctly when the system DPI is changed, make use of Winform's AutoSize capabilities and use layout panels that will automatically adjust as the size of things change, such as TableLayoutPanel (with AutoSize set appropriately on rows and columns) or FlowLayoutPanel.
I have a Form with a TabControl on it.
Onto the TabControl TabPages are dynamically added (FYI: It's about configuration settings for different dynamical loaded modules).
Now I would like to have a way to get the Form - and/or the TabControl on the Form - to adjust its size according to the size of the added TabPage.
While writing this I realize that this could be someway more complicated than I thought: Since the different TabPages can be different in size the Form does have to change its size whenever another TabPage is selected or I have to set it to the size of the biggest TabPage once which seems to be the best approach.
Of course I could set the size programmatically by setting width and height to fitting values but first I need to know if there is no automated way to solve my problem and if not what is the best approach to realize this.
I already tried AutoSize=true which didn't solve my problem. ;)
I'm working with Visual Studio 2005 .Net 2.0 and C#.
First off it's generally considered bad UI practice to have a magically resizing form when all a user is doing is switching tabs.
With that said, I don't think you can do what you're asking to without writing code.
However it should be easy enough to determine the size of the largest control you'll be adding to the tab control, then sizing the form (before its displayed) accordingly. If you set the Anchor properties of the tab control to Ttop,left,right,bottom or set its dock to fill, you'll get the tab control to resize with the form... Of course you'll need to account for the visual padding when computing the form size from a house control.