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inno-setuppascalscript

Scale radio button list with font size in Inno Setup

When trying to apply a custom installation mask with radio buttons (I used code provided in Replace installation types dropdown list by radio buttons) I see I am unable to use higher fonts as a little spacing should be needed between one radio button field and another one. To give you a visual example:

enter image description here

As default font size are not so easy to be read I wonder if there is a way of adding extra spacing between one radio button field and the next one.

Solution

  • Checkboxes and Radio buttons created on runtime in Inno Setup do not scale their height automatically with a DPI/font size.

    enter image description here

    So you have to scale them programmatically.

    ...
RadioButton.Left := WizardForm.TypesCombo.Left; 
RadioButton.Height := ScaleY(RadioButton.Height);
RadioButton.Top := WizardForm.TypesCombo.Top + I * RadioButton.Height;
...

    The ScaleY(RadioButton.Height) takes the default combobox/radiobutton height, which is designed for the default font and no display scaling (100%) and scales that to the custom font and actual display scaling.

    enter image description here

    Though note that using a non-default font-size for your application/setup is not a good idea. The user should choose a font size he/she is comfortable with in Windows preferences. You should not override his/her choice.

    When changing the font size, do not modify the shared default.isl, use the [LangOptions] section of your project file instead:

    [LangOptions]
DialogFontSize=20