The Picture property assigns a custom size picture to an editor. Use the Image property to assign an icon to the editor. The picture is displayed on the editor's label, if it's width is less that the label's width. Use the LabelSize property to enlarge the label's size. Use the Picture property to display a picture to the control's background. You can load a transparent picture ( a GIF file with transparency but set ) in order to display a transparent picture. 

The following VB sample loads a list of icons from a BASE64 encoded string:

Dim s As String
s = "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"
s = s + "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"
s = s + "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"
s = s + "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"
s = s + "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"
s = s + "hPh9gbBth2gHASBPgwBvB1hoBNBbADACghv6gAAPA4FnBcAfhKgngvAkRlhsiAg=="

With Record1
    .BeginUpdate
    .BackColor = vbWhite
    .LabelSize = 166
    .Images "gBJJgBAICAAGAAEAAQhYAf8Pf4hh0QihCJo2AEZjQAjEZFEaIEaEEaAIAkcbk0olUrlktl0vmExmUzmk1m03nE5nU7nk9n0/oFBoVDolFo1HpFJpVLplNp1PqFRqVTqlVq1XrFZrVbrldr1fsFhsVjslls1ntFptVrtltt1vuFxuVzul1u13vF5vV7vl9v1/wGBwWDwkbiAAQGJrOHwt7w7AyETf4AyDAymRxKApuHzkPyUuz2Ns2Vz+PyOk1GYxWLyeitOmy2wjOa2cZ1OWoGMw2T0ko0Mazutz2611W0nBy+42m95eR3O/jPE6OtjWZxGK5HS4tP4+e7u81Wa5m25075G+6m04HD9mT60Tz/bqWy5G32v30nvm/n9fu7DQva0rPOs7T5KY7MAvq08Fss3qZwQ6jZtXBMAvg5D9QMpzvuuzTrQ8/7JtlByZQhDK8PzEEBRDAbFQI7zyp1EsZOhEyvxdFccQ5FUdQKn0ZwjGqzP46ccvsqEhyDJMlSXJkmoyiwfJXKKPJAkSSAAkqUSynEeyclaKI2fh/nmd6NngH54GejZwAfNk1gOcEtgAcADmBOU6TsjZgAOQE5GAAc+z0AcsUFQiNT+QAPzWAZwB/MwBnxRyNHyB5/D+3boICA=="
    With .Add("Label", EXRECORDLibCtl.ReadOnly)
        .Image = 1
        .Picture = s
        .Value = "Editor"
    End With
    .EndUpdate
End With

The following VC sample loads a list of icons from a BASE64 encoded string:

CString s( "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" );
s = s + "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";
s = s + "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";
s = s + "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";
s = s + "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";
s = s + "hPh9gbBth2gHASBPgwBvB1hoBNBbADACghv6gAAPA4FnBcAfhKgngvAkRlhsiAg==";

m_record.BeginUpdate();
m_record.Images( COleVariant( "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" ) );
m_record.SetBackColor( RGB(255,255,255) );
m_record.SetLabelSize(166);
COleVariant vtMissing; vtMissing.vt = VT_ERROR;
CEditor editor = m_record.Add(COleVariant("Label"), /*ReadOnly*/ 0, vtMissing );
editor.SetImage( 1 );
editor.SetValue( COleVariant( "Editor" ) );
editor.SetPicture( COleVariant( (LPCTSTR)s ) );
m_record.EndUpdate();