--- a/dwt/internal/image/PngChunk.d	Wed Aug 27 14:10:03 2008 +0200
+++ b/dwt/internal/image/PngChunk.d	Wed Aug 27 14:30:35 2008 +0200
@@ -35,11 +35,11 @@
     // Non-critical chunks.
     static final int CHUNK_tRNS = 5;
     
-    static final byte[] TYPE_IHDR = {(byte) 'I', (byte) 'H', (byte) 'D', (byte) 'R'};
-    static final byte[] TYPE_PLTE = {(byte) 'P', (byte) 'L', (byte) 'T', (byte) 'E'};
-    static final byte[] TYPE_IDAT = {(byte) 'I', (byte) 'D', (byte) 'A', (byte) 'T'};
-    static final byte[] TYPE_IEND = {(byte) 'I', (byte) 'E', (byte) 'N', (byte) 'D'};
-    static final byte[] TYPE_tRNS = {(byte) 't', (byte) 'R', (byte) 'N', (byte) 'S'};
+    static final byte[] TYPE_IHDR = {cast(byte) 'I', cast(byte) 'H', cast(byte) 'D', cast(byte) 'R'};
+    static final byte[] TYPE_PLTE = {cast(byte) 'P', cast(byte) 'L', cast(byte) 'T', cast(byte) 'E'};
+    static final byte[] TYPE_IDAT = {cast(byte) 'I', cast(byte) 'D', cast(byte) 'A', cast(byte) 'T'};
+    static final byte[] TYPE_IEND = {cast(byte) 'I', cast(byte) 'E', cast(byte) 'N', cast(byte) 'D'};
+    static final byte[] TYPE_tRNS = {cast(byte) 't', cast(byte) 'R', cast(byte) 'N', cast(byte) 'S'};
     
     static final int[] CRC_TABLE;
     static {
@@ -108,8 +108,8 @@
  * array at the given offset.
  */ 
 void setInt16(int offset, int value) {
-    reference[offset] = (byte) ((value >> 8) & 0xFF);
-    reference[offset + 1] = (byte) (value & 0xFF);
+    reference[offset] = cast(byte) ((value >> 8) & 0xFF);
+    reference[offset + 1] = cast(byte) (value & 0xFF);
 }
 
 /**
@@ -130,10 +130,10 @@
  * array at the given offset.
  */ 
 void setInt32(int offset, int value) {
-    reference[offset] = (byte) ((value >> 24) & 0xFF);
-    reference[offset + 1] = (byte) ((value >> 16) & 0xFF);
-    reference[offset + 2] = (byte) ((value >> 8) & 0xFF);
-    reference[offset + 3] = (byte) (value & 0xFF);
+    reference[offset] = cast(byte) ((value >> 24) & 0xFF);
+    reference[offset + 1] = cast(byte) ((value >> 16) & 0xFF);
+    reference[offset + 2] = cast(byte) ((value >> 8) & 0xFF);
+    reference[offset + 3] = cast(byte) (value & 0xFF);
 }
 
 /**
@@ -273,7 +273,7 @@
 }
 
 bool isCritical() {
-    char c = (char) getTypeBytes()[0]; 
+    char c = cast(wchar) getTypeBytes()[0]; 
     return 'A' <= c && c <= 'Z';
 }
 
@@ -333,12 +333,12 @@
     byte[] type = getTypeBytes();
     
     // The third character MUST be upper case.
-    char c = (char) type[2];
+    char c = cast(wchar) type[2];
     if (!('A' <= c && c <= 'Z')) DWT.error(DWT.ERROR_INVALID_IMAGE);
     
     // All characters must be letters.
     for (int i = 0; i < TYPE_FIELD_LENGTH; i++) {
-        c = (char) type[i];
+        c = cast(wchar) type[i];
         if (!(('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z'))) {
             DWT.error(DWT.ERROR_INVALID_IMAGE);
         }
@@ -368,7 +368,7 @@
     buffer.append("\n\tType: ");
     byte[] type = getTypeBytes();
     for(int i = 0; i < type.length; i++) {
-        buffer.append((char) type[i]);
+        buffer.append(cast(wchar) type[i]);
     }
     
     contributeToString(buffer);