hhctrl.ocx: Resize the window when HH_SET_WIN_TYPE is called.

dlls/hhctrl.ocx/chm.c

@@ -250,7 +250,7 @@ static inline WCHAR *MergeChmString(LPCWSTR src, WCHAR **dst)
     return *dst;
 }
 
-void MergeChmProperties(HH_WINTYPEW *src, HHInfo *info)
+void MergeChmProperties(HH_WINTYPEW *src, HHInfo *info, BOOL override)
 {
     DWORD unhandled_params = src->fsValidMembers & ~(HHWIN_PARAM_PROPERTIES|HHWIN_PARAM_STYLES
                              |HHWIN_PARAM_EXSTYLES|HHWIN_PARAM_RECT|HHWIN_PARAM_NAV_WIDTH
@@ -258,7 +258,7 @@ void MergeChmProperties(HH_WINTYPEW *src, HHInfo *info)
                              |HHWIN_PARAM_EXPANSION|HHWIN_PARAM_TABPOS|HHWIN_PARAM_TABORDER
                              |HHWIN_PARAM_HISTORY_COUNT|HHWIN_PARAM_CUR_TAB);
     HH_WINTYPEW *dst = &info->WinType;
-    DWORD merge = src->fsValidMembers & ~dst->fsValidMembers;
+    DWORD merge = override ? src->fsValidMembers : src->fsValidMembers & ~dst->fsValidMembers;
 
     if (unhandled_params)
         FIXME("Unsupported fsValidMembers fields: 0x%x\n", unhandled_params);
@@ -379,7 +379,7 @@ BOOL LoadWinTypeFromCHM(HHInfo *info)
     }
 
     /* merge the new data with any pre-existing HH_WINTYPE structure */
-    MergeChmProperties(&wintype, info);
+    MergeChmProperties(&wintype, info, FALSE);
     if (!info->WinType.pszFile)
         info->WinType.pszFile  = info->stringsW.pszFile  = strdupW(info->pCHMInfo->defTopic ? info->pCHMInfo->defTopic : null);
     if (!info->WinType.pszToc)

dlls/hhctrl.ocx/help.c

@@ -1565,6 +1565,26 @@ static LRESULT Help_OnSize(HWND hWnd)
     return 0;
 }
 
+void UpdateHelpWindow(HHInfo *info)
+{
+    if (!info->WinType.hwndHelp)
+        return;
+
+    WARN("Only the size of the window is currently updated.\n");
+    if (info->WinType.fsValidMembers & HHWIN_PARAM_RECT)
+    {
+        RECT *rect = &info->WinType.rcWindowPos;
+        INT x, y, width, height;
+
+        x = rect->left;
+        y = rect->top;
+        width = rect->right - x;
+        height = rect->bottom - y;
+        SetWindowPos(info->WinType.hwndHelp, NULL, rect->left, rect->top, width, height,
+                     SWP_NOZORDER | SWP_NOACTIVATE);
+    }
+}
+
 static LRESULT CALLBACK Help_WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 {
     switch (message)

dlls/hhctrl.ocx/hhctrl.c

@@ -327,7 +327,8 @@ HWND WINAPI HtmlHelpW(HWND caller, LPCWSTR filename, UINT command, DWORD_PTR dat
 
         TRACE("Changing WINTYPE, fsValidMembers=0x%x\n", wintype->fsValidMembers);
 
-        MergeChmProperties(wintype, info);
+        MergeChmProperties(wintype, info, TRUE);
+        UpdateHelpWindow(info);
         return 0;
     }
     case HH_GET_WIN_TYPE: {

dlls/hhctrl.ocx/hhctrl.h

@@ -218,7 +218,8 @@ HHInfo *CreateHelpViewer(HHInfo*,LPCWSTR,HWND) DECLSPEC_HIDDEN;
 void ReleaseHelpViewer(HHInfo*) DECLSPEC_HIDDEN;
 BOOL NavigateToUrl(HHInfo*,LPCWSTR) DECLSPEC_HIDDEN;
 BOOL NavigateToChm(HHInfo*,LPCWSTR,LPCWSTR) DECLSPEC_HIDDEN;
-void MergeChmProperties(HH_WINTYPEW*,HHInfo*) DECLSPEC_HIDDEN;
+void MergeChmProperties(HH_WINTYPEW*,HHInfo*,BOOL) DECLSPEC_HIDDEN;
+void UpdateHelpWindow(HHInfo *info) DECLSPEC_HIDDEN;
 
 void InitSearch(HHInfo *info, const char *needle) DECLSPEC_HIDDEN;
 void ReleaseSearch(HHInfo *info) DECLSPEC_HIDDEN;