Implemented EM_GETLINECOUNT RichEdit message.

dlls/riched20/editor.c

@@ -51,7 +51,7 @@
   - EM_GETLANGOPTIONS 2.0
   - EM_GETLIMITTEXT
   - EM_GETLINE        
-  - EM_GETLINECOUNT   returns number of rows, not of paragraphs
+  + EM_GETLINECOUNT   returns number of rows, not of paragraphs
   + EM_GETMODIFY
   - EM_GETOLEINTERFACE
   - EM_GETOPTIONS
@@ -838,7 +838,6 @@ LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lP
   UNSUPPORTED_MSG(EM_GETLANGOPTIONS)
   UNSUPPORTED_MSG(EM_GETLIMITTEXT)
   UNSUPPORTED_MSG(EM_GETLINE)
-  UNSUPPORTED_MSG(EM_GETLINECOUNT)
   /* UNSUPPORTED_MSG(EM_GETOLEINTERFACE) separate stub */
   UNSUPPORTED_MSG(EM_GETOPTIONS)
   UNSUPPORTED_MSG(EM_GETPASSWORDCHAR)
@@ -1235,6 +1234,19 @@ LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lP
     }
     return ME_GetTextW(editor, rng->lpstrText, rng->chrg.cpMin, rng->chrg.cpMax-rng->chrg.cpMin, FALSE);
   }
+  case EM_GETLINECOUNT:
+  {
+    ME_DisplayItem *item = editor->pBuffer->pFirst->next;
+    int nRows = 0;
+
+    while (item != editor->pBuffer->pLast)
+    {
+      assert(item->type == diParagraph);
+      nRows += item->member.para.nRows;
+      item = item->member.para.next_para;
+    }
+    return max(1, nRows);
+  }
   case WM_CREATE:
     ME_CommitUndo(editor);
     ME_WrapMarkedParagraphs(editor);

dlls/riched20/editstr.h

@@ -147,6 +147,7 @@ typedef struct tagME_Paragraph
   int nFlags;
   int nYPos, nHeight;
   int nLastPaintYPos, nLastPaintHeight;
+  int nRows;
   struct tagME_DisplayItem *prev_para, *next_para, *document;
 } ME_Paragraph;
 

dlls/riched20/wrap.c

@@ -375,12 +375,15 @@ void ME_WrapTextParagraph(ME_Context *c, ME_DisplayItem *tp) {
   ME_WrapEndParagraph(&wc, p);
   tp->member.para.nFlags &= ~MEPF_REWRAP;
   tp->member.para.nHeight = wc.pt.y;
+  tp->member.para.nRows = wc.nRow + 1;
 }
 
 
 void ME_PrepareParagraphForWrapping(ME_Context *c, ME_DisplayItem *tp) {
   ME_DisplayItem *p;
+
   /* remove all items that will be reinserted by paragraph wrapper anyway */
+  tp->member.para.nRows = 0;
   for (p = tp->next; p!=tp->member.para.next_para; p = p->next) {
     switch(p->type) {
       case diStartRow: