CODEWITHSUNDEEP
vb.netwinforms
user1884032
user1884032

Reputation: 347

what does the following message api id mean

Can anyone tell me what these represent?

&H100 
&H109
&H200 
&H20E

Does anyone know where I can find more info on these and what they mean?

Upvotes: 0

Views: 723

Answers (1)

Steven Doggart
Steven Doggart

Reputation: 43743

Those are numeric values represented as hexadecimal literals. The &H prefix is the VB.NET syntax for a hexadecimal number. Numbers are numbers. They always mean the same thing. It's just a different way of representing the values, just as different languages use different words to represent the same ideas. Normally, numbers are represented as base-10, but sometimes hexadecimal can be more convenient because every two digits is exactly one byte. Each digit ranges from 0-F, so a two digit number can range from 00 (0) through FF (255) which is the range of one byte. Most languages represent hexadecimal with a 0x prefix. VB is unusual for having &H as the prefix. Here are the base-10 equivalents:

  • &H100 = 256
  • &H109 = 265
  • &H200 = 512
  • &H20E = 526

The meanings of these values depends on the API that uses them. If these are window message codes, this MSDN article would be a good place to start.

Upvotes: 3

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