// This method returns the count of either columns or rows
// in the Grid.
static private int GetCountOfItemsInDimension(IntPtr hwnd, int groupID, IsNewItemInDimension comparer)
{
// Algorithm:
// Get the rect of the item.
// Compare it using provided "comparer" with the previously obtained rect of the previous item in the grid
// if comparer returns New increase the count
int itemsCount = 0;
GroupManager.GroupInfo groupInfo = GetGroupInfo(hwnd, groupID);
if (groupInfo)
{
int [] items = groupInfo._items;
NativeMethods.Win32Rect rc;
NativeMethods.Win32Rect rcNext;
// get coordinates of the first item in the grid
if (WindowsListView.GetItemRect(hwnd, items[0], NativeMethods.LVIR_BOUNDS, out rc))
{
NewItemInDimension result = NewItemInDimension.New;
itemsCount++; // at least one exist
for (int i = 1; result != NewItemInDimension.Stop && i < groupInfo._count; i++)
{
if (!WindowsListView.GetItemRect(hwnd, items[i], NativeMethods.LVIR_BOUNDS, out rcNext))
{
// Fail to get rc, makes no sense to continue
System.Diagnostics.Debug.Assert(false, "GetCountOfItemsInDimension: failed to get item rect");
return(0);
}
result = comparer(rc, rcNext);
if (result == NewItemInDimension.New)
{
// found a change in the rect
// we either have a new column or new raw
itemsCount++;
// update the rc with the new coordinates
rc = rcNext;
}
}
}
return(itemsCount);
}
return(-1);
}
// This method returns the count of either columns or rows
// in the Grid.
static private int GetCountOfItemsInDimension (IntPtr hwnd, int groupID, IsNewItemInDimension comparer)
{
// Algorithm:
// Get the rect of the item.
// Compare it using provided "comparer" with the previously obtained rect of the previous item in the grid
// if comparer returns New increase the count
int itemsCount = 0;
GroupManager.GroupInfo groupInfo = GetGroupInfo (hwnd, groupID);
if (groupInfo)
{
int [] items = groupInfo._items;
NativeMethods.Win32Rect rc;
NativeMethods.Win32Rect rcNext;
// get coordinates of the first item in the grid
if (WindowsListView.GetItemRect(hwnd, items[0], NativeMethods.LVIR_BOUNDS, out rc))
{
NewItemInDimension result = NewItemInDimension.New;
itemsCount++; // at least one exist
for (int i = 1; result != NewItemInDimension.Stop && i < groupInfo._count; i++)
{
if (!WindowsListView.GetItemRect(hwnd, items[i], NativeMethods.LVIR_BOUNDS, out rcNext))
{
// Fail to get rc, makes no sense to continue
System.Diagnostics.Debug.Assert (false, "GetCountOfItemsInDimension: failed to get item rect");
return 0;
}
result = comparer (rc, rcNext);
if (result == NewItemInDimension.New)
{
// found a change in the rect
// we either have a new column or new raw
itemsCount++;
// update the rc with the new coordinates
rc = rcNext;
}
}
}
return itemsCount;
}
return -1;
}
