livecode - Highlight Before and after the characters --

Question

I want to highlight the strings before and after '--'. Example good -- bad here i want to highlight good and bad. when ever the -- is comes then before and after the strings are become highlight. Is it possible.

Answer 1

假设您在“mytext”字段中有以下文本：

This text comes before -- this text comes after.

LiveCode（与大多数应用程序一样）不允许不连续的选择，因此“选择”命令仅适用于连续运行的文本。

select word 1 to 3 of fld "mytext"

但是您可以通过设置单独的文本运行的 backgroundColor 属性来模拟选择突出显示：

put wordOffset("--",fld "mytext") into tWordIndex
set the backgroundColor of word 1 to tWordIndex - 1 of fld "mytext" to the hiliteColor
set the backgroundColor of word tWordIndex + 1 to -1 of fld "mytext" to the hiliteColor

当然，您可以在两个“set”语句中使用任何有效的文本块表达式，具体取决于您要“突出显示”“--”之前和之后的文本部分。

要从字段中清除背景颜色，请执行以下操作：

set the backgroundColor of char 1 to -1 of fld "mytext" to empty