Hey there! I am trying to do something a bit difficult and need you help... I have an MFC form containing a VB control, called the MS Flex Grid (C:\WINDOWS\system32\MSFLXGRD.OCX) ActiveX Control and some legacy code. Unfortunately I am not allowed to change this code or use MFC, But I still want to access and manipulate the control using from a Win32 function (and since needed, using ATL as well). I tried several attitudes, the first was obtaining a handle (HWND) to the control and passing messages (via SendMessage) to it in order to command it... Unfortunately it seems SendMessage only works for the basic Win32 controls (ListBox/Label etc.) and it let's me manipulate their basic functionality only, so it's no good.... Looking around I've noticed that a function called: GetDlgControl is mentioned in some places and might be of use, but I have found no such function. All I found was the ATL CWindow::GetDlgControl function, So I tried something like this: _Module.Init(NULL, AfxGetInstanceHandle(), &LIBID_ATLLib); CWnd *cwnd = GetDlgItem(IDC_MSFLEXGRID1); HWND hWnd = *cwnd; MSFlexGridLib::IMSFlexGridPtr pFlexGrid = NULL; CWindow wnd(hWnd); HRESULT hr = wnd.GetDlgControl(IDC_MSFLEXGRID1, __uuidof(MSFlexGridLib::IMSFlexGrid), (void**)&pFlexGrid); But hr is equal E_FAIL (MSDN = "the function returns E_FAIL if the control specified by nID (first parameter) cannot be found"). But this -is- the right resource ID. Then I tried something else instead: _Module.Init(NULL, AfxGetInstanceHandle(), &LIBID_ATLLib); HWND hWnd2 = (HWND)m_mfcFlexGridControl; HWND hWnd = (HWND)GetDlgItem(IDC_MSFLEXGRID1); MSFlexGridLib::IMSFlexGridPtr pFlexGrid = NULL; CWindow wnd(hWnd2); HRESULT hr = wnd.GetDlgControl(IDC_MSFLEXGRID1, __uuidof(MSFlexGridLib::IMSFlexGrid), (void**)&pFlexGrid); But got the same result.... As it didn't work, I also tried several other combinations such as: #import "C:\WINNT\System32\msflxgrd.ocx" raw_interfaces_only, raw_native_types, no_namespace, named_guids I even (with some despair...) tried in a loop all the IDs from 0 to 50000 in a loop....But Too no avail... What am I missing here? Many thanks!
