Method MessageHandler

DuiLib/Control/UIRichEdit.cpp:2129–2271

}

LRESULT CRichEditUI::MessageHandler(UINT uMsg, WPARAM wParam, LPARAM lParam, bool& bHandled)
{
    if( !IsVisible() || !IsEnabled() ) return 0;
    if( !IsMouseEnabled() && uMsg >= WM_MOUSEFIRST && uMsg <= WM_MOUSELAST ) return 0;
    if( uMsg == WM_MOUSEWHEEL && (LOWORD(wParam) & MK_CONTROL) == 0 ) return 0;

	if (uMsg == WM_IME_COMPOSITION)
	{
		// ���΢�����뷨λ���쳣������
		HIMC hIMC = ImmGetContext(GetManager()->GetPaintWindow());
		if (hIMC) 
		{
			// Set composition window position near caret position
			POINT point;
			GetCaretPos(&point);

			COMPOSITIONFORM Composition;
			Composition.dwStyle = CFS_POINT;
			Composition.ptCurrentPos.x = point.x;
			Composition.ptCurrentPos.y = point.y;
			ImmSetCompositionWindow(hIMC, &Composition);

			ImmReleaseContext(GetManager()->GetPaintWindow(),hIMC);
		}
		return 0;
	}

    bool bWasHandled = true;
    if( (uMsg >= WM_MOUSEFIRST && uMsg <= WM_MOUSELAST) || uMsg == WM_SETCURSOR ) {
        if( !m_pTwh->IsCaptured() ) {
            switch (uMsg) {
            case WM_LBUTTONDOWN:
            case WM_LBUTTONUP:
            case WM_LBUTTONDBLCLK:
            case WM_RBUTTONDOWN:
            case WM_RBUTTONUP:
                {
                    POINT pt = { GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam) };
                    CControlUI* pHover = GetManager()->FindControl(pt);
                    if(pHover != this) {
                        bWasHandled = false;
                        return 0;
                    }
                }
                break;
            }
        }
        // Mouse message only go when captured or inside rect
        DWORD dwHitResult = m_pTwh->IsCaptured() ? HITRESULT_HIT : HITRESULT_OUTSIDE;
        if( dwHitResult == HITRESULT_OUTSIDE ) {
            RECT rc;
            m_pTwh->GetControlRect(&rc);
            POINT pt = { GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam) };
            if( uMsg == WM_MOUSEWHEEL ) ::ScreenToClient(GetManager()->GetPaintWindow(), &pt);
            if( ::PtInRect(&rc, pt) && !GetManager()->IsCaptured() ) dwHitResult = HITRESULT_HIT;
        }
        if( dwHitResult != HITRESULT_HIT ) return 0;
        if( uMsg == WM_SETCURSOR ) bWasHandled = false;