We Keep Coding

UWP: difference between RichEditBox and RichTextBlock in displaying some fonts

I have a project in UWP where I need to display the same text in a RichEditBox and in a RichTextBlock.
For some fonts (e.g. Courier), this is pretty ok and no big problems, but for other fonts (like Arial) the difference is pretty substantial.
Please note that I use exactly the same code, the only difference is just the Font.
Please find an MVCE that reproduces the issue here: https://github.com/vfailla/UWPRichEditBox
How can I setup the two elements to display the text in Arial in the very same visual way?

For some fonts (e.g. Courier), this is pretty ok and no big problems, but for other fonts (like Arial) the difference is pretty substantial. Please note that I use exactly the same code, the only difference is just the Font.
First of all, you will need to set the same CharacterSpacing of these two different controls:
m_richEditBox.CharacterSpacing = 100;
m_richTextBlock.CharacterSpacing = 100;
Then, you will need to set the same FontStretch of two controls, but here comes the issue:After a few tests I found textStretch doesn't work for RichEditBox/TextBox. And by default, the text inside look more like FontStretch.Condensed. So as a temporary workaround, you can set your RichTextBlock.FontStretch to FontStretch.Condensed:
m_richTextBlock.FontStretch = FontStretch.Condensed;
I'll consult through internal channel to report this issue, and I'll update this thread once I got any response.

WPF - Multiline TextBox text gets blurry while typing a long text

I have a textBox that grows vertically while typing. Unfortunately when I type a long text (for example a 3 line text) some PART of it gets blurry. What's more, when I prevent it from growing vertically and make it grow horizontally it works fine - the text is sharp then.
What I've tried:
UseLayoutRounding = true;
RenderOptions.TextRenderingMode = "ClearType";
Please forget about
TextOptions.TextFormattingMode = "Display"
It has to be "Ideal".
See the screenshots:

Disable SubPixel Rendering and Anti-Aliasing. Try
SetValue(RenderOptions.EdgeModeProperty, EdgeMode.Aliased);

Since you mentioned:
I have a textBox that grows vertically while typing
I assume then that it's a CustomControl derived from TextBox and with a custom rendering to grow vertically instead of using the builtin text wrap ability.
Since I was unable to reproduce your issue with the stock TextBox and the parameters (with Ideal) you mentioned (I've checked from Framework 4.0 to 4.6 on VS 2013), maybe the blur comes from your custom code.
By the way, with not using the builtin wrap?
TextWrapping="Wrap"
Maybe you should include more code and details, like framework version, visual studio version, OS version and so on.
Likewise, specify your version of "Textbox that grows vertically". Something like this ?

Try increasing the font size of the textbox just a tiny amount (use 1/4s if in pixels). Alternatively, try changing the line height slightly in a similar fashion. I think the problem might be down to WPF's interpretation of the sub-pixels and may be rounding off at the wrong place.

rtf change font size

I am trying to perform edit functions in a RichTextBox on a C# (Windows Forms) application.
I would like to be able to select any number of text characters in the script then change targeted font characteristics.
The trouble I have is that each characters font properties may be set to different font. In this case the textbox ignores the event that I request.
How can I solve my problem?

Take a look at this:
Changing font for richtextbox without losing formatting
I think it's the same issue. LarsTech's solution is working perfectly for me.

I have a code to change the size:
RichTextBox1.Font.Size == new System.Drawing.Font(RichTextBox1.Font.Name, yoursize)
And if you want to change only the selected text size:
RichTextBox1.SelectionFont.Size == new System.Drawing.Font(RichTextBox1.SelectionFont.Name, yoursize)
Hope it will help.

Changing Column Height for ListView Column

With reference to my previous question here: Changing Font Size for ListView Column in C#. I would like to know how to change the height of the column within a listView with OwnerDraw enabled.
I have succeeded in changing the font using the following code.
using (Font headerFont =
new Font("Helvetica", 10, FontStyle.Bold)) //Font size!!!!
{
e.Graphics.DrawString(e.Header.Text, headerFont,
Brushes.Black, e.Bounds, sf);
}
Although I cannot change the size of the column, giving it a cut-off effect. I have been playing around with the Rectangle.Bounds property but this appears to be read only.
Any suggestions?
Thanks

I have decided to take an alternative approach for my application. I chose to remove the header altogether and replace it with labels within a Container Panel.
This was achieved by changing the HeaderStyle property of the listView to "None". The result allowed me to dock the labels to the top of my listView, giving me the larger text I've been after!
Granted this is a little different to the question asked but provides a simple solution to what appears to be a complex problem! Additionally this would make the column headers static so may not be useful for developing applications requiring numerous changes
Thanks for all your help, and let me know if you would like more detail
Euan

You can try Better ListView Express. It allows changing column header height to arbitrary sizes. It is also free and the usage is 99% same as ListView.

Prevent combobox from resizing on font change

I have a combo box that has a list of font families in it. As you can guess I'm making a toolstrip for editing fonts in a rich text box control. The problem is when I change fonts it's resizing my combobox.
scrolling through different fonts causes the combo box to become "jumpy" and some fonts have a huge height which is causing for some hilarious problems.
Exhibit A:
Exhibit B:
Yeh... I'll show the code that I have so far... by the way the combobox is just bound to the font families collection.
void box_SelectedIndexChanged(object sender, EventArgs e)
{
String text = ((Font)box.SelectedItem).Name;
Font font = (Font)box.SelectedItem;
BeginInvoke(new Action(() => box.Text = text));
BeginInvoke(new Action(() => box.Font = font));
}
Anyone have any ideas, if I can't find a solution I can just stop the font from changing and just display the name in the default font.

Using a ToolStripComboBox is the problem here I think. The .NET 2.0 ToolItem classes have a lot of residual, erm, features that never got addressed. WPF sucked the resources away. The tool strip is obviously not handling the resize very well. Nor does it make the rest of the form move down when it gets bigger which is by design.
The canonical font combobox uses owner draw to display the fonts in the dropdown list in their regular style. Without changing the font of the box itself. You really don't want the toolstrip to resize, that's just not a great UI.

The only way I can think of doing it is by creating a custom combobox control and deriving from said control. This will give you access to the variable ownerdraw which gives us a little more flexibility without having to mess around with the ItemHeight property. Hooking into one of the events, which dictate that the value of the control has changed.
You could then have a function like the following to calculate the new layout size:
using (Font font = new Font(this.Font.FontFamily, (float)this.PreviewFontSize))
{
Size textSize;
textSize = TextRenderer.MeasureText("yY", font);
_itemHeight = textSize.Height + 2;
}

I tried all these approaches with little success sadly. However I didn't realize it until today when I looked at how microsoft office implements it. They actually use the same font in the combo box for the selected item no matter what font is selected. So as much as I want to make it more custom I'm just going to use a uniform font for whatever font is shown in the selected index.