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Problem
How can I tell the combo box that it should store the index as a value in the cell but display the associated choice?
Cause
Action
The easiest way would be to use the CGXTabbedComboBox control. There you could assign the following choice list to the cell:
| SetStyleRange(CGXRange(6,1,8,1), | |||
| CGXStyle() | |||
| .SetControl(GX_IDS_CTRL_TABBED_COMBOBOX) .SetChoiceList("one 1 two 2 three 3 ") .SetUserAttribute(GX_IDS_UA_TABLIST_KEYCOL, _T("1")) .SetUserAttribute(GX_IDS_UA_TABLIST_TEXTCOL, _T("0")) .SetUserAttribute(GX_IDS_UA_TABLIST_SHOWALLCOLS, _T("0")) |
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| ); | |||
This will display one, two or three in the cell but the index (1,2 or 3) will be stored as value. You can also change the value with SetValueRange(cell, 1);
If, for any reason you don't want to used tabbed combo boxes, here is a discussion how this was problem could be solved with earlier grid versions.
CGXComboBox
When constructing the combo box control object, you should specify GXCOMBO_DISPLAYCHOICE as flag.
The following two combo box controls are pre-defined in the grid (see mygridvw.cpp in the gridapp sample)
Example:
| // use an integer as cell value RegisterControl(GX_IDS_CTRL_ONEBASED_EX, new CGXComboBox(this, GX_IDS_CTRL_ONEBASED_EX, GX_IDS_CTRL_ONEBASED_EX, GXCOMBO_ONEBASED|GXCOMBO_DISPLAYCHOICE)); // use an zero-based integer as cell value |
CGXComboBoxWnd
The ComboBoxWnd class maintains an attribute m_bDispChoice that lets you enable this feature. You should set this attribute when registering your combo box control object.
Example:
| // CComboBox adapter with CBS_DROPDOWNLIST style { |
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| CGXComboBoxWnd* pWnd = new CGXComboBoxWnd(this);
pWnd->Create(WS_VSCROLL | CBS_DROPDOWNLIST, 12001); |
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| pWnd->m_nIndexValue = 0; | // zero-based index | ||
| pWnd->m_bDispChoice = TRUE; | // display choice | ||
| pWnd->m_bDropDownOnClick = FALSE; | // do not dropdown the // list when user clicks // the first time on the // cell |
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| RegisterControl(IDS_CTRL_MYDROPDOWNLIST, pWnd); | |||
| } | |||
You could then apply the combo box to cells with:
| SetStyleRange(CGXRange(nRow, nCol), | |||
| CGXStyle() | |||
| .SetControl(IDS_CTRL_MYDROPDOWNLIST) .SetChoiceList("mon tue wed thu fri sat sun") .SetValue(1) // Tuesday |
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| ); | |||
