WM_DRAWITEM does not process for tab control

[Mark Salsbery]

Where are you handling WM_DRAWITEM? What about overriding CTabCtrl::DrawItem() in your tab control class? Mark

Mark Salsbery Microsoft MVP - Visual C++ :java:

[yaminisridaran]

I am trying to change the background colour of the tab control. I will be able to it in drawitem method but the execution does not come to draw item method even if i select ownerdrawfixed in the properties of the tab control.

[yaminisridaran]

The execution does not come to drawitem method. Why

[Mark Salsbery]

The following code works for me... Note you have to have a tab control subclassed by an object of your CTabCtrl-derived class, otherwise DrawItem() will never get called...

class CMyTabCtrl : public CTabCtrl
{
public:
CMyTabCtrl() : CTabCtrl() {}

virtual void DrawItem(LPDRAWITEMSTRUCT /\*lpDrawItemStruct\*/);

};

void CMyTabCtrl::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{
CDC dc;
dc.Attach(lpDrawItemStruct->hDC);

// Note:  My test tab control has two tabs inserted :)

if (0 == lpDrawItemStruct->itemID)
    dc.DrawText(\_T("Tab 1"), &lpDrawItemStruct->rcItem, DT\_CENTER);
else
    dc.DrawText(\_T("Tab 2"), &lpDrawItemStruct->rcItem, DT\_CENTER);

dc.Detach();

}

Mark Salsbery Microsoft MVP - Visual C++ :java:

[yaminisridaran]

Thanks for ur help I created a dialog based application. I selected a tab control and moved to my dialog . I have created an MFC class named CMyTabCtrl derived from CTabCtrl. I added ur code to it. I created a member variable in the dialog class for the tab control using class wizard which is CMyTabCtrl m_Tab I have selected the owner draw fixed properties But still the drawitem of CMyTabCtrl does not called. Please implement this and if u r getting let me know what u did.

[Mark Salsbery]

I did the same - I used a DDX_Control() call in DoDataExchange() to subclass the control...

void CMyDialog::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
DDX_Control(pDX, IDC_TAB1, m_Tab); <-- make sure you use the right ID!!!
}

Mark Salsbery Microsoft MVP - Visual C++ :java:

[yaminisridaran]

I have done that. But still does not work Can u send me ur sample project.

[Mark Salsbery]

It's a VS2008 project - is that OK?

Mark Salsbery Microsoft MVP - Visual C++ :java:

[yaminisridaran]

ok

[yaminisridaran]

Am I doing anything wrong in setting the properties of the tab control. Shall I send the sample code.

[Mark Salsbery]

It seems like you're doing everything.... Send me an email from here and I'll reply with the project. Mark

Mark Salsbery Microsoft MVP - Visual C++ :java:

[yaminisridaran]

I am waiting for ur reply

[yaminisridaran]

It works now when i call insert item Thanks

[Mark Salsbery]

Ohhh you had no tabs :) I guess the email through CodeProject isn't working yet....I sent one so I could get your address to send the project. Glad you got it working! Mark

Mark Salsbery Microsoft MVP - Visual C++ :java:

[yaminisridaran]

Thanks for ur support

[Mark Salsbery]

You're welcome!

Mark Salsbery Microsoft MVP - Visual C++ :java: