OpenEuphoria

Re: Free Sci Calculator/Server now available

• Posted by Al Getz <Xaxo at aol.com> Feb 26, 2005
• 655 views

Hi there Jacques,


Thanks for the great info.  My mistake i guess, in that i didnt
write the whole name of the message out, ie
  WM_CD
is short for
  WM_COPYDATA
which is a system defined message used to pass data between programs.

Make more sense now?

Sorry about that.
Hope you liked the calculator anyway 

Take care,
Al


jacques deschênes wrote:
> 
> 
> Hi Al,
> 
> I looked at your fc_connect.ew
> May I suggest that you change the value
> of WM_CD constant to a value that comply with Microsoft win32 api
> some value in between #8000 and #FFFF
> 
> here an excerpt from  microsoft reference:
> 
> The WM_APP constant is used by applications to help define private messages, 
> usually of the form WM_APP+X, where X is an integer value.
> 
> 
> #define WM_APP       0x8000
> #define WM_USER      0x400 
> 
>     The WM_APP constant is used to distinguish between message values that 
>     are reserved for use by the system and values that can be used by an 
>     application to send messages within a private window class. 
>     The following are the ranges of message numbers available.
> 
>     Range	Meaning
>     0 through WM_USER-­1 	Messages reserved for use by the system.
>     WM_USER through 0x7FFF	Integer messages for use by private window classes.
>     WM_APP through 0xBFFF	Messages available for use by applications.
>     0xC000 through 0xFFFF	String messages for use by applications.
>     Greater than 0xFFFF	        Reserved by the system.
> 
>     Message numbers in the first range (0 through WM_USER­1) are defined by
>     the system. Values in this range that are not explicitly defined are 
>     reserved by the system.
> 
>     Message numbers in the second range (WM_USER through 0x7FFF) can be 
>     defined and used by an application to send messages within a private 
>     window class. These values cannot be used to define messages that are 
>     meaningful throughout an application, because some predefined window 
>     classes already define values in this range. For example, predefined 
>     control classes such as BUTTON, EDIT, LISTBOX, and COMBOBOX may use 
>     these values. Messages in this range should not be sent to other 
>     applications unless the applications have been designed to exchange 
>     messages and to attach the same meaning to the message numbers.
> 
>     Message numbers in the third range (0x8000 through 0xBFFF) are available 
>     for application to use as private messages. Message in this range do not 
>     conflict with system messages.
> 
>     Message numbers in the fourth range (0xC000 through 0xFFFF) are defined 
>     at run time when an application calls the RegisterWindowMessage function 
>     to retrieve a message number for a string. All applications that register 
>     the same string can use the associated message number for exchanging 
>     messages. The actual message number, however, is not a constant and 
>     cannot be assumed to be the same between different sessions.
> 
>     Message numbers in the fifth range (greater than 0xFFFF) are reserved by 
>     the system. 
> 
> Regards,
> Jacques d.
> 

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