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SplitterCtrl (flexible control with custom drawing)

By , 24 Dec 2008
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Introduction

This control is necessary for the partition of the dialog, main or child window of your program by several parts. You can appropriate to each part the window, which SplitterCtrl will manage. As a result we will get a matrix with the controls. The SplitterCtrl is derived from CWnd and is a common control based on MFC. Generally, SplitterCtrl is similar to CSplitterWnd, but it is easier to use. For example, you can create a complex matrix. For this into one or several cells it is necessary to put the same SplitterCtrl and also to divide on parts.

The control can use scaling sizes of cells with changes in its sizes. In this case the binding of a matrix to one of four angles of the parental window is possible. Also, you can use a mouse for the dynamic or static pulling of boundaries between the windows and much more.

Using the Code

The control includes four classes:

Class Description

SplitterCtrlBase

Base class. Includes all the base functionality, but it does not draw itself.

SplitterCtrl

Derived from SplitterCtrlBase. Also it is derived from ISplitterCtrlRecalc and SplitterCtrlDraw classes for the correction of sizes of parts and to draw the control respectively.

ISplitterCtrlRecalc

This class makes it possible to assign sizes of parts of the control. For using be inherited from ISplitterCtrlRecalc and realize its functions. Also in constructor of your class it is necessary to call the SetRecalcManager function with pointer of ISplitterCtrlRecalc object.

SplitterCtrlDraw

This class makes it possible to draw the control. You can draw your window yourself. For this be inherited from SplitterCtrlDraw and realize its functions. Also in constructor of your class it is necessary to call the SetDrawManager function with pointer of SplitterCtrlDraw object.

To create the control and add elements to it, do the following:

   #include <span class="code-string">"SplitterCtrl.h"</span>

   SplitterCtrl m_Splitter;
   CListCtrl m_List1, m_List2;
      …
      …
   if(m_Splitter.Create(this,
      WS_CHILD | WS_VISIBLE,CRect(0,0,200,200),
      ID_SplitterCtrl)==false)
      return -1;   // error.

   // Create child controls.
   if(m_List1.Create(WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN | LVS_REPORT,CRect(0,0,0,0),
      &m_Splitter,ID_List1)==0 ||
      m_List2.Create(WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN | LVS_REPORT,CRect(0,0,0,0),
      &m_Splitter,ID_List2)==0)
      return -1;   // error.
   m_List1.InsertColumn(0,"00",LVCFMT_LEFT,100);
   m_List2.InsertColumn(0,"01",LVCFMT_LEFT,100);

   // Add child items in the m_Splitter.
   m_Splitter.AddRow();
   m_Splitter.AddColumn();
   m_Splitter.AddColumn();
   m_Splitter.SetWindow(0,0,m_List1.m_hWnd);
   m_Splitter.SetWindow(0,1,m_List2.m_hWnd);

   // Load state from registry.
   if(m_Splitter.LoadState(AfxGetApp(),"SplitterCtrl","SplitterState")==false)
   {   m_Splitter.Update();
       m_Splitter.SetEqualWidthColumns();   // error - create default state.
   }
   m_Splitter.Update();

You can manage the control as a normal matrix, dynamically insert and delete rows and columns (AddRow/AddColumn, InsertRow/InsertColumn, DeleteRow/DeleteColumn). The control makes it possible to assign the sizes (SetWidthForStatic/SetHeightForStatic, SetWidthForDynamic/SetHeightForDynamic), and also to equalize widths and heights of the cells (SetEqualWidthColumns/SetEqualHeightRows). The control is expected to call the Update function to show the results that are set by functions InsertRow, DeleteColumn, SetHeightForStatic, SetWidthsForDynamic, etc.

The control is able to save and load its state from the registry or other sources (LoadState/SaveState). This is one of the possibilities. To get the full power, look at the opened interface of the SplitterCtrlBase and SplitterCtrl classes.

Good luck Smile | :)

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

About the Author

Borodenko Oleg
Software Developer
Belarus Belarus
No Biography provided

Comments and Discussions

 
GeneralMy vote of 5 PinmemberMember 4408248-Dec-10 18:36 
GeneralReally Fantastic Control PinmemberMember 45424452-Jul-09 9:56 
GeneralThanks PinmemberMember 46050343-Feb-09 10:01 
GeneralHi Oleg, PinmemberKeith Vinson30-Dec-08 10:20 
GeneralLooks interesting - But why this versus normal CSplitterWnd Pinmemberc-sharp24-Dec-08 5:11 
GeneralRe: Looks interesting - But why this versus normal CSplitterWnd PinmemberBorodenko Oleg24-Dec-08 9:59 
GeneralRe: Looks interesting - But why this versus normal CSplitterWnd PinmemberAndreone29-Dec-08 13:58 

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