--- oup/current/Tools/TxmpReplace.pas	2007/05/26 20:41:34	199
+++ oup/current/Tools/TxmpReplace.pas	2007/06/12 17:35:56	214
@@ -41,13 +41,12 @@ var
 
 implementation
 {$R *.dfm}
-uses Main, ConnectionManager, ImagingTypes;
+uses Main, ConnectionManager, ImagingTypes, TXMP;
 
 
 
 procedure TForm_TxmpReplace.SelectFile(fileinfo: TFileInfo);
 var
-  mem:  TMemoryStream;
   fadingbyte, depthbyte, storebyte: Byte;
 begin
   fileid := fileinfo.ID;
@@ -79,8 +78,6 @@ begin
 end;
 
 procedure TForm_TxmpReplace.btn_loadClick(Sender: TObject);
-var
-  mem:   TMemoryStream;
 begin
   if opend.Execute then
   begin
@@ -101,7 +98,9 @@ var
   datbyte: Word;
   mem: TMemoryStream;
   new_storetype: Byte;
-  formatinfo: TImageFormatInfo;
+  i: Integer;
+const
+  powers: array[0..8] of Integer = (1, 2, 4, 8, 16, 32, 64, 128, 256);
 begin
   if filelist.ItemIndex >= 0 then
   begin
@@ -111,6 +110,28 @@ begin
     else
       ConManager.Connection[ConnectionID].LoadDatFilePart(fileid, $9C, 4, @old_rawaddr);
 
+    if (OniImage_New.Width[1] > 256) or (OniImage_New.Height[1] > 256) then
+    begin
+      ShowMessage('Widht and height have to be smaller than or equal to 256.');
+      Exit;
+    end;
+    for i := 0 to High(powers) do
+      if OniImage_New.Width[1] = powers[i] then
+        Break;
+    if i = Length(powers) then
+    begin
+      ShowMessage('Width has to be a power of 2 (1, 2, 4, 8, 16 ...)');
+      Exit;
+    end;
+    for i := 0 to High(powers) do
+      if OniImage_New.Height[1] = powers[i] then
+        Break;
+    if i = Length(powers) then
+    begin
+      ShowMessage('Height has to be a power of 2 (1, 2, 4, 8, 16 ...)');
+      Exit;
+    end;
+
     if (OniImage_Old.Width[1] <> OniImage_New.Width[1]) or
       (OniImage_Old.Height[1] <> OniImage_New.Height[1]) then
     begin