Tab Control issue

Is there a special message that I am not aware of being sent to my main window procedure that indicates a tab on a tab control being clicked on? (One of the tabs?) I've tried WM_LBUTTONUP messages, but no reaction when I click the tabs.

The tab control was created using the WS_CHILD style and is attached the main window of my program. I've looked on MSDN except that I can't seem to find a message sent for such an occurance, though I may be mistaken.

Any help would be greatly appreciated.
Tyouk

Okay I somewhat figured this out by digging deeper into the MSDN archives there. Now the code is as follows (so far):

Code:

---

case WM_NOTIFY:
                        if( sizeof(*(lParam)) == sizeof(NMMOUSE) )
                        {
                                pnmm = (NMMOUSE *)(LPARAM)lParam;
                                if( pnmm->hdr.code == NM_CLICK )
                                {
                                        ZeroMemory(&tcHitTest, sizeof(TCHITTESTINFO));
                                        tcHitTest.pt.x = pnmm->pt.x;
                                        tcHitTest.pt.y = pnmm->pt.y;
                                        tab = TabCtrl_HitTest(hTC_Wnd, &tcHitTest);
                                }
                        }
                        else
                        {
                                pnmh = (NMHDR *)(LPARAM)lParam;
                                if( pnmh->code == NM_CLICK )
                                {
                                        ZeroMemory(&tcHitTest, sizeof(TCHITTESTINFO));
                                        tcHitTest.pt.x = ; // TODO: determine how to get this value
                                        tcHitTest.pt.y = ; // TODO: determine how to get this value
                                        tab = TabCtrl_HitTest(hTC_Wnd, &tcHitTest);
                                }
                        }

                        // check to see which tab (if any) were clicked
                        if( tab != -1 )
                        {
                                if( tab == 0 )
                                        MessageBox(NULL, "EzBooks tab was hit.", "HitTest", MB_OK);
                                else if( tab == 1 )
                                        MessageBox(NULL, "Income tab was hit.", "HitTest", MB_OK);
                                else if( tab == 2 )
                                        MessageBox(NULL, "Expenses tab was hit.", "HitTest", MB_OK);
                                else if( tab == 3 )
                                        MessageBox(NULL, "Payroll tab was hit.", "HitTest", MB_OK);
                                else if( tab == 4 )
                                        MessageBox(NULL, "Assets tab was hit.", "HitTest", MB_OK);
                                else if( tab == 5 )
                                        MessageBox(NULL, "Reports tab was hit.", "HitTest", MB_OK);
                                else
                                        MessageBox(NULL, "Unknown tab was hit.", "HitTest Unknown", MB_OK);
                        }
                        break;

---

Now it's still not giving me any message boxes (the last if statement). Am I even on the right track, or am I completely off? Please let me know. (I determined that as per the specs on the NM_CLICK notification, that since lParam could infact be a larger structure then NMHDR struct, this larger struct would have an NMHDR struct as the first param of the larger struct... thus the NMMOUSE struct was a logic choice considering that it involves mouse clicks as well as has an NMHDR struct as it's first param. Thus why I check to see the size of the struct first, now I was never the best on pointers so please correct me if my comparison between the two is incorrect sizeof(*(lParam)) == sizeof(NMMOUSE)?

Thanks for any help,
Tyouk

>>Is there a special message ... that indicates a tab on a tab control being clicked on?<<

Check for the TCN_SELCHANGE notification and then use TCM_GETCURSEL or the TabCtrl_GetCurSel macro to determine which tab is selected.

Thanks, fixed my problems.