improve text input

[d2df-sdl.git] / src / shared / utils.pas

diff --git a/src/shared/utils.pas b/src/shared/utils.pas
index 4c4db7b0df59997698bca6e3d5861cb9ba9a01a0..20706c661dae397f8a0b4914ab00e9caa765a252 100644 (file)
--- a/src/shared/utils.pas
+++ b/src/shared/utils.pas
@@ -87,6 +87,7 @@ function int64ToStrComma (i: Int64): AnsiString;
 
 function upcase1251 (ch: AnsiChar): AnsiChar; inline;
 function locase1251 (ch: AnsiChar): AnsiChar; inline;
+function IsValid1251 (ch: Word): Boolean;
 function IsPrintable1251 (ch: AnsiChar): Boolean;
 
 function toLowerCase1251 (const s: AnsiString): AnsiString;
@@ -962,6 +963,11 @@ begin
   result := ch;
 end;
 
+function IsValid1251 (ch: Word): Boolean;
+begin
+  result := (ch = Ord('?')) or (wc2shitmap[ch] <> '?')
+end;
+
 function IsPrintable1251 (ch: AnsiChar): Boolean;
 begin
   result := (ch >= #32) and (ch <> #127)