00418: Obtaining information about a context in Visual PRO/5

Title:

Obtaining information about a context in Visual PRO/5

Description:

The following program demonstrates how to obtain information about the current GUI window’s context: 

0110 OPEN (100)”X0″ 
0120 DIM S$:TMPL(100,IND=0) 
0130 LET S$=FIN(100) 

After running the code, you’ll see this via a dump: 

S$ TEMPLATE: 
CURRENT_CONTEXT:U(2) 
AVAILABLE_CONTEXT:U(2) 
ACTIVE_CONTEXT_COUNT:U(2) 
SCALE_X:B 
SCALE_Y:B 
UNITS:C(1) 
SCREEN_WIDTH:U(2) 
SCREEN_HEIGHT:U(2) 
SCREEN_HRES:U(2) 
SCREEN_VRES:U(2) 
DISPLAY_TYPE:U(1) 
DEVNAME:C(1*=0) 
DEVTYPE:C(1*=0) 
DEVMODE:C(1*=0) 

This means that the screen resolution is s.screen_width by s.screen_height. Very useful if you ever want to center your forms on the screen! 

Consider the following code to get the monitor resolution: 

0110 OPEN (100)”X0″ 
0120 DIM S$:TMPL(100,IND=0) 
0130 LET S$=FIN(100) 
0140 PRINT FATTR(S$),’LF’ 
0150 PRINT S.SCREEN_WIDTH, S.SCREEN_HEIGHT, S.SCREEN_HRES,S.SCREEN_VRES 


The command FATTR() provides the programmer with a list of the variables including type that are used with the FIN() function. The programmer can then just print the variables needed. 

Last Modified: 10/04/2000 Product: Visual PRO/5 Operating System: Windows

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