--- a/src/preview.cpp	Sun May 18 19:49:15 2014 +0900
+++ b/src/preview.cpp	Sat May 24 10:25:13 2014 +0900
@@ -1,5 +1,5 @@
 // Filename   : preview.cpp
-// Last Change: 16-May-2014.
+// Last Change: 23-May-2014.
 //
 
 #include "marksheet.h"
@@ -59,17 +59,20 @@
 
 // Functions
 /* サムネイル表示 */
-void PThumbnailPanel::SetFiles( wxArrayString imagefiles, wxArrayString cachefiles )
+void PThumbnailPanel::SetFiles( wxArrayString imagefiles, wxArrayString cachefiles, int select )
 {
     m_imagefiles = imagefiles;
 
     wxBitmap bmp;
-    bmp.LoadFile( cachefiles[0], wxBITMAP_TYPE_PNG ); m_bitmap0->SetBitmap( bmp );
-    bmp.LoadFile( cachefiles[1], wxBITMAP_TYPE_PNG ); m_bitmap1->SetBitmap( bmp );
-    bmp.LoadFile( cachefiles[2], wxBITMAP_TYPE_PNG ); m_bitmap2->SetBitmap( bmp );
-    bmp.LoadFile( cachefiles[3], wxBITMAP_TYPE_PNG ); m_bitmap3->SetBitmap( bmp );
-    bmp.LoadFile( cachefiles[4], wxBITMAP_TYPE_PNG ); m_bitmap4->SetBitmap( bmp );
-    bmp.LoadFile( cachefiles[5], wxBITMAP_TYPE_PNG ); m_bitmap5->SetBitmap( bmp );
+    m_imageList.Create( THUMB_W, THUMB_H );
+
+    bmp.LoadFile( cachefiles[0], wxBITMAP_TYPE_PNG ); m_imageList.Add( bmp );
+    bmp.LoadFile( cachefiles[1], wxBITMAP_TYPE_PNG ); m_imageList.Add( bmp );
+    bmp.LoadFile( cachefiles[2], wxBITMAP_TYPE_PNG ); m_imageList.Add( bmp );
+    bmp.LoadFile( cachefiles[3], wxBITMAP_TYPE_PNG ); m_imageList.Add( bmp );
+    bmp.LoadFile( cachefiles[4], wxBITMAP_TYPE_PNG ); m_imageList.Add( bmp );
+    bmp.LoadFile( cachefiles[5], wxBITMAP_TYPE_PNG ); m_imageList.Add( bmp );
+    SetImageList( select );
 }
 /* 画像クリックで拡大表示 */
 void PThumbnailPanel::OnClick0( wxMouseEvent& WXUNUSED(event) ) { Preview( 0 ); }
@@ -81,9 +84,48 @@
 void PThumbnailPanel::Preview( int n )
 {
     if ( m_imagefiles.GetCount() < n + 1 ) return;
+    SetImageList( n );
     m_parent->SetPreviewImage( n );
 }
+/* サムネイル表示 */
+void PThumbnailPanel::SetImageList( int selected )
+{
+    m_bitmap0->SetBitmap( m_imageList.GetBitmap(0) );
+    m_bitmap1->SetBitmap( m_imageList.GetBitmap(1) );
+    m_bitmap2->SetBitmap( m_imageList.GetBitmap(2) );
+    m_bitmap3->SetBitmap( m_imageList.GetBitmap(3) );
+    m_bitmap4->SetBitmap( m_imageList.GetBitmap(4) );
+    m_bitmap5->SetBitmap( m_imageList.GetBitmap(5) );
 
+    wxImage image = m_imageList.GetBitmap( selected ).ConvertToImage();
+    unsigned char *data = image.GetData();
+    for ( int y = 0; y < THUMB_H; y++ )
+        for ( int x = 0;  x <THUMB_W; x++ )
+            data[ ( y * THUMB_W + x ) * 3 + 2 ] = 255;  // 文字色：黒(0,0,0)->青(0,0,255)
+
+    wxBitmap bmp_mask( image );
+
+    switch ( selected ) {
+        case 0:
+            m_bitmap0->SetBitmap( bmp_mask );
+            break;
+        case 1:
+            m_bitmap1->SetBitmap( bmp_mask );
+            break;
+        case 2:
+            m_bitmap2->SetBitmap( bmp_mask );
+            break;
+        case 3:
+            m_bitmap3->SetBitmap( bmp_mask );
+            break;
+        case 4:
+            m_bitmap4->SetBitmap( bmp_mask );
+            break;
+        case 5:
+            m_bitmap5->SetBitmap( bmp_mask );
+            break;
+    }
+}
 
 ////////////////////////////////////////////////////////
 // プレビューダイアログ
@@ -156,11 +198,11 @@
     m_textInfo->SetValue( info );
 }
 
-void PreviewDialog::SetFiles( wxArrayString imagefiles, wxArrayString cachefiles )
+void PreviewDialog::SetFiles( wxArrayString imagefiles, wxArrayString cachefiles, int select )
 { 
     m_imagefiles = imagefiles;
     m_cachefiles = cachefiles;
-    m_thumbPanel->SetFiles( m_imagefiles, m_cachefiles );
+    m_thumbPanel->SetFiles( m_imagefiles, m_cachefiles, select );
 
     wxString title = wxT("プレビュー ＠ ") + m_imagefiles[0].BeforeLast( wxFILE_SEP_PATH );
     this->SetTitle( title );