CODEWITHSUNDEEP
c++visual-studio-2013mfc
Muhammad Raza
Muhammad Raza

Reputation: 907

Change Text Color in MFC C++?

I want to change the color of the LVITEM? m_szList is the CListCtrl.

LVITEM lvItem;

    lvItem.mask = LVIF_TEXT;
    lvItem.iItem = 0;
    lvItem.iSubItem = 0;
    lvItem.pszText = _T("Sandra");
    m_szList.InsertItem(&lvItem);
    m_szList.SetTextColor(RGB(255, 78, 12));

    lvItem.mask = LVIF_TEXT;
    lvItem.iItem = 1;
    lvItem.iSubItem = 0;
    lvItem.pszText = _T("Roger");
    m_szList.InsertItem(&lvItem);

This code can change the both color of sandra and roger. But i just want to change the color of sandra to red. And roger to default(black).

Upvotes: 2

Views: 1504

Answers (1)

Jerry Coffin
Jerry Coffin

Reputation: 490128

You can use a Custom-draw list control for this job.

You make the control custom draw by responding to the NM_CUSTOMDRAW message. This is notification message that's sent from the control. Using MFC, your function header will look something like this:

void CCustomLvView::OnNMCustomdraw(NMHDR *pNMHDR, LRESULT *pResult)

To add this handler, you normally use the Properties list for the CListCtrl (or CListView), something like this:

enter image description here

That'll create a handler something like this:

void CCustomLV2View::OnNMCustomdraw(NMHDR *pNMHDR, LRESULT *pResult) {
    LPNMCUSTOMDRAW pNMCD = reinterpret_cast<LPNMCUSTOMDRAW>(pNMHDR);

    *pResult = CDRF_DODEFAULT;
}

[If memory serves, it also has a comment or two.]

You'll need to add a little code to that to change the text color, something on this order:

void CCustomLV2View::OnNMCustomdraw(NMHDR *pNMHDR, LRESULT *pResult) {
    LPNMLVCUSTOMDRAW pNMCD = reinterpret_cast<LPNMLVCUSTOMDRAW>(pNMHDR);

    *pResult = CDRF_DODEFAULT;

    switch (pNMCD->nmcd.dwDrawStage) {
        // this tells the control, before any painting begins, that we 
        // want to be notified just before any item in the control is drawn.
        case CDDS_PREPAINT:
            *pResult = CDRF_NOTIFYITEMDRAW;
            break;

        // This will be called before an item is drawn.
        // We check what item is being drawn, and set the text color appropriately
        case CDDS_ITEMPREPAINT:
            if (pNMCD->nmcd.dwItemSpec == 0)
                pNMCD->clrText = RGB(0, 0, 0);
            else
                pNMCD->clrText = RGB(255, 78, 12);
            break;
    }
}

As it is right now, this draws the text for the first item in black, and all subsequent items in your shade of red. The if (pNMCD->nmcd.dwItemSpec == 0) is what chooses the items, and (of course) the pNMCD->clrText = RGB... is what sets the text color.

Also note that I've made a fairly minor modification to the code it generates, so I have a LPNMLVCUSTOMDRAW instead of a LPNMCUSTOMDRAW. This gives access to the ListView-specific fields passed to the custom-draw handler. Without that, we don't get access to some of (any of?) the fields we're using.

Upvotes: 4

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