Start a new project and enter your control to the project
(From the menu choose Project->Components (Image 14) ,
mark the MyFirstOCX checkBox (Image 15) and press OK)

Image 14:

Now you see the new control at the ToolBox.

Image 16:

Insert it to your form, resize it to your preferred size,
and insert "hello" to the control Text property.
Run the program and click the button.
A "hello" message box is popping.

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