This is a system setting. Tablet PCs, as a rule, are already set up so that they can easily switch with such buttons so that they work well in any program, and not just for you. To configure the tablet, in Win7 use the control panel + display, personalization, window color. Click "Advanced appearance options", select "Message Box" in the "Component" field. Increase the font size. Do not be fooled by a poor preview, the button will actually grow. This dialog box has additional settings that you can configure to simplify user interface management.
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