Change CListCtrl, CHeaderCtrl height, font, color, and background

Technorati Tags: VC, Listctrl

Original address: http://www.vckbase.com/document/viewdoc/?id=1855

change CListCtrl, CHeaderCtrl height, font, color, and background

Author: Effortsboyszyb

Download source code

Summary

Using CListCtrl to display data is convenient, sometimes we need to label a column or a cell background and font color, or need to change the row height and font size, CListCtrl to change this is not very convenient. This article describes how to derive a class to change the height, font size, column background color, cell background color, column font color, cell font color of CListCtrl and its headers.

Keywords: self-painted sub-class color CListCtrl CHeaderCtrl

First, the realization process

1. Table Header Modification
Create a new MFC class CHEADERCTRLCL, its base class is CHeaderCtrl, the response OnPaint message implementation self-painting, implementation code see source code (because the code is more space, so do not paste it up, sorry), in the header file to define the function
LRESULT onlayout (WPARAM WPARAM, LPARAM LPARAM), after manually adding the message response On_message (hdm_layout, onlayout), change the height in the message response, implementing the code as follows:

LRESULT cheaderctrlcl::onlayout (WPARAM WPARAM, LPARAM LPARAM)

{

    int nheight = (int) (PWPOS->CY * m_height); Change height, m_height to multiples

}

2. Changes to the table
Create a new MFC class CLISTCTRLCL, whose base class is CListCtrl, define a CHEADERCTRLCL member variable M_header, Overload Presubclasswindow (), modify the control type in the function to self-paint mode, and then subclass the table header , the code is as follows:

void CLISTCTRLCL::P Resubclasswindow ()

{

    TODO: Add private code here and/or call base class

    ModifyStyle (0,lvs_ownerdrawfixed);

    CListCtrl::P Resubclasswindow ();

    CHeaderCtrl *pheader = GetHeaderCtrl ();

    M_header.subclasswindow (Pheader->getsafehwnd ());

}

Add member variables to save some basic information.

CPtrList M_ptrlistcol;  Save column Colors

CPtrList M_ptrlistitem; Save the item Color table

CPtrList M_coltextcolor; Save Column Font Color

CPtrList M_itemtextcolor; Save Cell font Color

Overload DrawItem () to implement the self-painting, the implementation code please refer to the code. Add the Message Macro On_wm_measureitem_reflect () manually, adding the following function, which implements modifying the row height.

void Clistctrlcl::measureitem (Lpmeasureitemstruct lpmeasureitemstruct)

{

    if (m_nrowheight>0)

    {

        Lpmeasureitemstruct->itemheight = M_nrowheight;

    }

}

Add message processing OnMeasureItem ()

void Clistctrlcl::onmeasureitem (int nidctl, lpmeasureitemstruct lpmeasureitemstruct)

{

    TODO: Add Message Handler code and/or call default values here

    Clistctrl::onmeasureitem (Nidctl, lpmeasureitemstruct);

}

Overwrite base class InsertColumn to save column information

            int nsubitem/* =-1 */)

{

    M_HEADER.M_HCHAR.ADD (lpszcolumnheading);

    if (nformat==lvcfmt_left)

    {

        M_header.m_format = M_header.m_format + "0";

    }

    else if (nformat==lvcfmt_center)

    {

        M_header.m_format = M_header.m_format + "1";

    }

    else if (nformat==lvcfmt_right)

    {

        M_header.m_format = M_header.m_format + "2";

    }

    Else

    {

        M_header.m_format = M_header.m_format + "1";

    }

    Return Clistctrl::insertcolumn (Ncol,lpszcolumnheading,nformat,nwidth,nsubitem);

}

Second, the operation effect diagram is as follows:

Iii. Methods of Use

Add HeaderCtrlCl.h, HeaderCtrlCl.cpp, ListCtrlCl.h, ListCtrlCl.cpp to your project, drag a CListCtrl control to the dialog box, add the member variable, and then in the header file # Include "ListCtrlCl.h", change the member variable type you just added to CLISTCTRLCL, and add the initialization code in the dialog box OnInitDialog ():

M_listctrl.setcolcolor (0,rgb (10,150,20)); Set Column background color

m_listctrl.setcolcolor (2,rgb (30,100,90));