Tabs Beyond View Enhancement Request

[PaltryProgrammer]

Greetings and Kind Regards I would find it helpful if means were such as to permit knowing by glance if tabs beyond view are available . Perhaps by coloring the left/right tab buttons . Thank You Kindly PS I am looking forward to again buying you a cup of coffee more likely several such upon keyboard macros being provided in BowPad as I utilize such with some regularity and which make my work much easier on those occassions - Best - Cheerio PPS I am currently utilizing the macro function of Notepad++ but would prefer to utilize BowPad

[stefankueng]

this would require to drop the tabbar control and implement a fully custom control. this might take a while...

[PaltryProgrammer]

I do not know which TabBar control you are utilizing , however my modest knowledge of Windows MFC controls informs me the coloring of said controls can perhaps be accomplished via sub-classing - Best

[kitepad]

I found a demo to owner draw spin button of tab control. Maybe we can leverage this approach. https://www.codeproject.com/articles/278/fully-owner-drawn-tab-control.

[kitepad]

Based on this article, I trying to owner draw spin button successful. Below is my modification prototype for TabBar:

1. Add HWND m_spin; and static LRESULT CALLBACK TabBarSpin_Proc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam); to CTabBar in tabbar.h.

2. Implement TabBarSpin_Proc as below:

   
   {
   CTabBar *m_pTab = reinterpret_cast<CTabBar *>(::GetWindowLongPtr(hwnd, GWLP_USERDATA));
   switch (message) 
   {
       case WM_PAINT:
       {
           PAINTSTRUCT ps;
           BeginPaint(hwnd, &ps);
           HDC hdc = ps.hdc;
           RECT rcPaint;
           GetClientRect(hwnd, &rcPaint);
           bool   isDark = CTheme::Instance().IsDarkTheme();
           HBRUSH hbr    = CreateSolidBrush(isDark ? RGB(0x32, 0x32, 0x32) : RGB(0xFF, 0xFF, 0xFF));
           FillRect(hdc, &rcPaint, hbr);
           DeleteObject(hbr);
           int xPos = rcPaint.left;
           int mPos = (rcPaint.bottom - rcPaint.top) / 2;
           int size = 5;
           POINT leftArrow[] = {{xPos + size * 3, mPos + size}, {xPos + size * 3, mPos - size}, {xPos, mPos}};
           xPos = rcPaint.right - (rcPaint.right - rcPaint.left) / 2;
           POINT rightArrow[] = {{xPos + 3, mPos + size}, {xPos + 3, mPos - size}, {xPos + size * 3, mPos}};
           Polygon(hdc,rightArrow, sizeof(rightArrow) / sizeof(rightArrow[0]));
           Polygon(hdc,leftArrow, sizeof(leftArrow) / sizeof(leftArrow[0]));
   
           EndPaint(hwnd, &ps);
       }
       return FALSE;
   }
   return CallWindowProc(m_pTab->m_tabBarSpinDefaultProc, hwnd,message, wParam, lParam);
   }

[kitepad]

3. Modified InsertAtEnd method to insert below code before return index statement:

   
   while (pWnd != 0)
   {
       WCHAR buf[] = L"msctls_updown32";
       int   nRet  = ::GetClassName(pWnd, buf, sizeof(buf) / sizeof(buf[0]));
       if (nRet && lstrcmp(buf, L"msctls_updown32"))
       {
           pWnd = GetWindow(pWnd, GW_HWNDNEXT);
       }
       else
       {
           RECT winrc;
           GetClientRect(*this, &winrc);
           MoveWindow(pWnd, winrc.right - 45, winrc.top, 45, winrc.bottom - winrc.top - 1, TRUE);
   
           if (m_spin == 0)
           {
               // MessageBox(NULL, L"Found", L"Found", MB_OK);
               SetWindowLongPtr(pWnd, GWLP_USERDATA, reinterpret_cast<LONG_PTR>(this));
   
               m_tabBarSpinDefaultProc = reinterpret_cast<WNDPROC>(::SetWindowLongPtr(pWnd, GWLP_WNDPROC, reinterpret_cast<LONG_PTR>(TabBarSpin_Proc)));
               m_spin            = pWnd;
           }
   
           pWnd = 0;
       }
   }