Hi Antonio,
(Version 3.18 Win 64-Lua 5.3 Tested on Win7 and Win10)
I've been colourising my Matrixes. I have found a discrepancy in the
Documentation
===============
*BGCOLOR_CB* - Action generated to retrieve the background color of a
cell when it needs to be redrawn.
int function(Ihandle **ih*, int *lin*, int *col*, int **red*, int **green*, int
**blue*); [in C]
*ih*:bgcolor_cb(*lin, col*: number) -> (*red, green, blue, ret*: number) [in
Lua]
*ih*: identifier of the element that activated the event.
*lin*, *col*: Coordinates of the cell.
*red*, *green*, *blue*: the cell background color.
==============
It seem clear to me-- from this-- that the function return should be
return red, green blue
However the correct return for green and blue is
return green, blue
I can't seem to get red to work at all.
It shows red as black, which looks same as returning 0,0,0
I have attached my test program in lua.
Regards,
John
require( "iuplua" )
require( "iupluacontrols" )
matrix = iup.matrix
{
numlin=3,
numcol=3,
numcol_visible=3,
numlin_visible=3,
height0=10,
widthdef=30,
scrollbar="NO",
}
data = {
{"1:1", "1:2", "1:3"},
{"2:1", "2:2", "2:3"},
{"3:1", "3:2", "3:3"},
}
function matrix:value_cb(l, c)
if l == 0 or c == 0 then
return nil--"title"
end
return data[l][c]
end
function matrix:value_edit_cb(l, c, newvalue)
data[l][c] = newvalue
end
function matrix:edition_cb(l, c, mode, update)
end
function matrix:bgcolor_cb(l, c)
-- play here
local green =0
local blue =0
local red =200
if c == 0 then
return nil -- title row, not used
end
if l == 0 then -- title column
return nil
end
return green, blue, red
end
dlg=iup.dialog{matrix; title="IupMatrix in Callback Mode" }
dlg:show()
if (iup.MainLoopLevel()==0) then
iup.MainLoop()
end
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