What You Need to Know About &H1, &H8000, etc.

By A.M. Brevik | Created on 2025-08-02 14:14:35

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Are you wondering what those hexadecimal values mean? Look no further! In this article, we'll delve into the world of hexadecimal numbers and explore their significance in programming.

What are Hexadecimal Numbers?

Hexadecimal numbers are a base-16 number system used in computer programming. They're denoted by a prefix of &H, followed by the numerical value. For example, &H1 represents the decimal number 1, while &H8000 represents the decimal number 32768.

How Do Hexadecimal Numbers Work?

In hexadecimal notation, each digit can have one of 16 values: 0 through 9 and A through F. The prefix &H indicates that the following value is in hexadecimal form. For instance, &H10 represents the binary number 00000001.

What are &H1, &H8000, etc?

In the context of programming, &H1 and &H8000 refer to specific keyboard keys and their associated values. &H1 is equivalent to the decimal value 1, while &H8000 represents a toggle key's indicator light on the keyboard.

How Do You Use Hexadecimal Numbers in Programming?

When working with hexadecimal numbers, you can use bitwise operations like AND (&) or OR (|) to combine values. For example, if you want to check whether the ALT key has been pressed or not, you would assign &H8000 to it.

Conclusion

In conclusion, hexadecimal numbers are an essential part of programming and play a crucial role in keyboard input functions like GetKeyState. By understanding how hexadecimal values work and how they're used in programming, you'll become a more effective programmer.

Examples:

&H1 represents the decimal number 1.
&H8000 represents the decimal number 32768.
To check whether the ALT key has been pressed or not, assign &H12 and &H8000 to it.

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