CMFCTaskPane-Highlighting/DeHighlighting task text on clicking the task

Question

Hi,

In CMFCTaskPane, I want to change the text color of the task in blue when click on the task text.
I am able to change task color using BOOL SetTaskTextColor(int nGroup, int nTask, COLORREF color, COLORREF colorHot = (COLORREF)-1); but when I clicking another task I need to dehighlight previously selected task.I dont know how to do it. please help me

Answer 1

For example, using the MFC TaskPanes sample at TasksPane to set clicked task text to green

Add to the bottom of CTaskPane class in TaskPane.h -

protected:
    BOOL CreateTreeControl();
    BOOL CreateEditControl();

    int  m_prevGroup{ -1 }; //Added by RLWA32
    int  m_prevTask{ -1 };  //Added by RLWA32
    COLORREF m_prevClr;  //Added by RLWA32

// Implementation
public:
    virtual ~CTaskPane();
    virtual void OnClickTask(int nGroupNumber, int nTaskNumber, UINT uiCommandID, DWORD_PTR dwUserData);  //Added by RLWA32

protected:
    afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);

    DECLARE_MESSAGE_MAP()
};

Add OnClickTask override to TaskPane.cpp -

void CTaskPane::OnClickTask(int nGroupNumber, int nTaskNumber, UINT uiCommandID, DWORD_PTR dwUserData)
{
    if (nGroupNumber != m_prevGroup || nTaskNumber != m_prevTask)
    {
        if (m_prevGroup != -1 && m_prevTask != -1)
            SetTaskTextColor(m_prevGroup, m_prevTask, m_prevClr);
    }

    m_prevGroup = nGroupNumber;
    m_prevTask = nTaskNumber;
    m_prevClr = GetTask(nGroupNumber, nTaskNumber)->m_clrText;

    SetTaskTextColor(nGroupNumber, nTaskNumber, RGB(0, 255, 0));

    CMFCTasksPane::OnClickTask(nGroupNumber, nTaskNumber, uiCommandID, dwUserData);
}