How to get the distance between the baseline of text and the vertical border of a label?

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I've Googled but it's not easy to find a solution.

I want to get the exact distance between the baseline of the text and the bottom border of a label in C#. I want this because I want to draw a line under the text (don't want to use underlined font, because it's so tight/close to the text).

Here is my try:

C#

//This is placed in the custom label class
int dy = (int)((ClientRectangle.Height - Font.GetHeight())/2);

But it's not exact, the dy returns about 3 and the line drawn to the label is too far from the baseline of the text.

Your help would be highly appreciated.

Thanks.

Posted 18-Apr-13 3:08am

supernorb

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Sergey Alexandrovich Kryukov · Answer 1 · 2013-04-18T04:51:00

I think the correct answer should be: you never can rely on this value. Instead, you should review your design the way independent on this parameter.

Do you see the point? This detail of the control layout is not documented and will hardly be ever documented. Why? Because Microsoft, as well as any other party, want to give it some design freedom. The library System.Windows.Forms relies on the Windows controls available in the present-day raw Windows API. The fine detail of layout of these control is a subject of change. What if the style of Window presentation changes once again? It may require the change in the location of the base line. You design would break like a playing card house.

What to do? You have too opposite approaches.

First, make your design tolerant to fine layout changes. Use only the basic assumptions on the layout. Make your design fluid.

The opposite approach is: if you care about exact position of the base line, you should have a reason for that. It means you want to match this coordinate with something else. What, exactly? This geometrically matching element should not be in another control, as it would not be reliable, as I explained above. Hence, you should create your own, custom control, put all coordinated graphical elements together and render it all in a custom way. This way, you will introduce a design element fully independent of Windows styles.

Good luck,

—SA