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include shell.inc
 
VxDcall SHELL_SYSMODAL_Message
 
The SHELL_SYSMODAL_Message service displays system model message box in the
Windows shell.
 
Parameter  Description
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EBX        Specifies the handle of the virtual machine responsible for the
           message.
 
EAX        Specifies the message box flags. See the MB_ symbols in the
           SHELL.INC file. The MB_SYSTEMMODAL value must be given.
 
ECX        Points to null-terminated string containing the message text.
 
EDI        Points to null-terminated string containing the caption text. If
           this parameter is zero, the service uses the standard caption. If
           this parameter points to an empty string, the message box has no
           caption.
 
Return Value
 
The EAX register contains the response code from the message box. It is one
of the ID symbols defined in the SHELL.INC file.
 
Uses
 
EAX, Flags
 
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