Window Size Maximums

[James Zukowski]

The current documentation lists the window size limits as 255 lines by 255 columns. The Release Notes for PxPlus 2021 (v18) state that (for NOMADS-oriented components) "Increased panel and control sizes to a width of 620 and height of 255 in all designers". We're currently on v15, and close to moving to v18. We just ran into a user with a monitor capable of 312 columns. The program has been patched to limit this to 255.

I presume the new window size limits are in effect for more than just NOMADS, and that we can address the larger monitors appropriately. However, I couldn't find any other documentation regarding those larger size limits. Could someone confirm that they are supported, or if this is a NOMADS-only implementation.

Thanks in advance!

[Mike King]

Technically you can now have windows greater than 255 columns wide, however some internal values (such as the FIB/MSE variables) which are limited to 1 byte will not properly reflect the window dimensions or co-ordinates.  If your program logic uses these 1 byte values they will get the wrong values. 

We adapted our logic in Nomads to use OBJ(0) byte 33 for 2 and 35 for 2 to get the window sizes.  Similarly logic reading the mouse location did not use the line/col value in MSE but rather divided the X position by the character width and Y position by the line height.

[James Zukowski]

I thought it would be something like that. We got the error with the 'window' mnemonic trying to create a 312-character wide window (3440/11 pixels). And yes, a lot of mice will need to be swept away...in due time...once we upgrade.