How to integrate CCheckBox (API) in your SDK application

0. Prepare a bitmap with all 6 possible check mark states (RGB(255,0,255) is the transparency color) 
1. Create a global variable of type CCheckBox: 
CCheckBox   g_cb_1 (IDB_STATES,13);
                 // IDB_STATES: ID of bitmap resource, prepared in step 0
                 // 13: dimension (width=height) of check mark
2. Initialize the static member m_hInst in WinMain: 
CCheckBox::m_hInst = hInstance;
3. From the WM_INITDIALOG message handler call: 
g_cb_1.Subclass (IDC_CBOX, hDlg);
              // IDC_CBOX: ID of check box
              // hDlg: handle to parent dialog

 

How to integrate CCheckBox (API) in your MFC application

0. Prepare a bitmap with all 6 possible check mark states 
1. Declare a CCheckBox member variable in your CDialog derived class: 
CCheckBox   m_cb_1;
2. Call the CCheckBox's constructor from the constructor of your dialog: 
CYourDialog::CYourDialog () :
    m_cb_1 (IDB_STATES, 13)   
{ }      // IDB_STATES: ID of bitmap resource, prepared in step 0
         // 13: dimension (width=height) of check mark
3. In your OnInitDialog call: 
// Initialize CCheckBox::m_hInst
CCheckBox::m_hInst = ::AfxGetResourceHandle ();

// Subclass IDC_CBOX (= ID of check box)
m_cb_1.Subclass (ID_CBOX, this->m_hWnd);