How do I make floating forms such as in Lazarus or Photoshop using C#?

How do I make it so when a program loads, it opens multiple forms, but they're like tools, such as in the Lazarus IDE there 开发者_如何学JAVAare multiple windows that all affect each other?

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What you are describing is a multiple document interface (MDI) application, commonly used where windows reside under a single parent window.

http://en.wikipedia.org/wiki/Multiple_document_interface

Advice on creating such applications is a broad subject - but the followings links should help you on your path:

• Creating MDI application using C#
• Introduction to MDI Forms with C#
• Developing MDI Applications in C#
• Multiple-Document Interface (MDI) Applications

Good luck and feel free to ask about any specific problems you have.