C / C++ / MFC

CWnd *pGridCtrl = this->GetDlgItem(IDC_MEMBERSGRID);
ASSERT(pGridCtrl);		// Must exist
if ( ::IsWindow(pGridCtrl->GetSafeHwnd()) )
{
    pGridCtrl->MoveWindow(..<the_desired_size_of_gridctrl_in_the_CMembersView)
}

CMembersView::OnSize:
CWnd *pGridCtrl = this->GetDlgItem(IDC_MEMBERSGRID);
ASSERT(pGridCtrl);		// Must exist
if ( ::IsWindow(pGridCtrl->GetSafeHwnd()) )
{
    // assume you need to move the grid to the left half of CMembersView
    CRect rctClient;
    this->GetClientRect(&rctClient);
    pGridCtrl->MoveWindow(0, 0, rctClient.Width()/2, rctClient.Height());
}

pGridCtrl->GetWindowRect(&grid_rect);

void CMainView::OnInitialUpdate()                  // CMainView is my application's default view
{
	CFormView::OnInitialUpdate();
	
	initialized = TRUE;
	CWnd *pGridCtrl = GetDlgItem(IDC_SALEPURCHASEGRIDCTRL);
	CRect rect,grid_rect;
	
	CWnd *pWnd = this->GetOwner();
	pWnd->GetClientRect(rect);
	

	pGridCtrl->GetWindowRect(grid_rect);     // works fine here
	grid_rect = rect;
	grid_rect.left += 16;
	grid_rect.top += 150;
	grid_rect.bottom -= 300;
	grid_rect.right -= 16;

	pGridCtrl->MoveWindow(grid_rect);        // GridCtrl is resized properly
.
.
.

void CMembersView::OnInitialUpdate()
{
	
	CFormView::OnInitialUpdate();
	
	initialized = TRUE;
	CWnd *pGridCtrl = this->GetDlgItem(IDC_MEMBERSGRID);
	ASSERT(pGridCtrl);		// Must exist

	CRect rect,grid_rect;
	
	CWnd *pWnd = this->GetOwner();
	pWnd->GetClientRect(rect);                // Also tried with &rect
	
	pGridCtrl->GetWindowRect(grid_rect); // problem is here. no grid_rect coordinates.   Also tried with &grid_rect
	grid_rect = rect;
	grid_rect.left += 16;
	grid_rect.top += 150;
	grid_rect.bottom -= 300;
	grid_rect.right -= 16;

	pGridCtrl->MoveWindow(&grid_rect);
.
.
.