public PenHandle(HPEN handle, bool ownsHandle = true)
{
Debug.Assert(handle.IsInvalid || Imports.GetObjectType(handle) == ObjectType.Pen || Imports.GetObjectType(handle) == ObjectType.ExtendedPen);
Handle = handle;
_ownsHandle = ownsHandle;
}
/// <summary>
/// Creates a solid pen based on the <paramref name="color"/> and <paramref name="width"/>.
/// </summary>
public CreatePenScope(Color color, int width = 1)
{
// From MSDN: if width > 1, the style must be PS_NULL, PS_SOLID, or PS_INSIDEFRAME.
HPen = CreatePen(
width > 1 ? PS.GEOMETRIC | PS.SOLID : default,
internal bool MessageHandler(int nMsg, IntPtr wParam, IntPtr lParam, ref int nRes)
{
if (m_hWndPaint == IntPtr.Zero)
{
return(false);
}
//TODO::消息队列处理
#region 处理监听
for (int i = 0; i < m_aMessageFilters.Count; i++)
{
bool bHandled = false;
var nResult = m_aMessageFilters[i].MessageHandler(nMsg, wParam, lParam, ref bHandled);
if (bHandled)
{
nRes = nResult;
return(true);
}
}
#endregion
switch (nMsg)
{
case WindowMessages.WM_APP:
break;
case WindowMessages.WM_CLOSE:
break;
case WindowMessages.WM_ERASEBKGND:
{
nRes = 1;
return(true);
}
case WindowMessages.WM_PAINT:
#region 处理WM_PAINT
RECT rcPaint = new RECT();
if (!NativeMethods.GetUpdateRect(m_hWndPaint, ref rcPaint, false))
{
return(true);
}
if (m_RootControl == null)
{
PAINTSTRUCT ps = new PAINTSTRUCT();
NativeMethods.BeginPaint(m_hWndPaint, ref ps);
NativeMethods.EndPaint(m_hWndPaint, ref ps);
return(true);
}
if (m_bAlphaBackground)
{
var dwExStyle = NativeMethods.GetWindowLong(m_hWndPaint, SetWindowLongOffsets.GWL_EXSTYLE);
if ((dwExStyle.ToInt32() & WindowStyles.WS_EX_LAYERED) != 0x80000)
{
NativeMethods.SetWindowLong(m_hWndPaint, (int)SetWindowLongOffsets.GWL_EXSTYLE,
dwExStyle.ToInt32() ^ WindowStyles.WS_EX_LAYERED);
}
RECT rcClient = new RECT();
NativeMethods.GetClientRect(m_hWndPaint, ref rcClient);
PAINTSTRUCT ps = new PAINTSTRUCT();
NativeMethods.BeginPaint(m_hWndPaint, ref ps);
if (m_bUpdateNeeded)
{
m_bUpdateNeeded = false;
if (NativeMethods.IsRectEmpty(ref rcClient) == 0)
{
}
}
}
if (m_bUpdateNeeded)
{
m_bUpdateNeeded = false;
RECT rcClient = new RECT();
NativeMethods.GetClientRect(m_hWndPaint, ref rcClient);
if (NativeMethods.IsRectEmpty(ref rcClient) == 0)
{
}
}
if (m_bFocusNeeded)
{
}
//TODO::Animating
#region Render screen
if (m_bOffscreenPaint && m_hbmpOffscreen == IntPtr.Zero)
{
RECT rcClient = new RECT();
NativeMethods.GetClientRect(m_hWndPaint, ref rcClient);
m_hDcOffscreen = NativeMethods.CreateCompatibleDC(m_hDcPaint);
m_hbmpOffscreen = NativeMethods.CreateCompatibleBitmap(m_hDcPaint, rcClient.right - rcClient.left, rcClient.bottom - rcClient.top);
Debug.Assert(m_hDcOffscreen != IntPtr.Zero);
Debug.Assert(m_hbmpOffscreen != IntPtr.Zero);
}
{
PAINTSTRUCT ps = new PAINTSTRUCT();
NativeMethods.BeginPaint(m_hWndPaint, ref ps);
if (m_bOffscreenPaint)
{
HBITMAP hOldBitmap = NativeMethods.SelectObject(m_hDcOffscreen, m_hbmpOffscreen);
int nSaveDC = NativeMethods.SaveDC(hOldBitmap);
//TODO::Paint
NativeMethods.RestoreDC(m_hDcOffscreen, nSaveDC);
NativeMethods.BitBlt(ps.hdc, ps.rcPaint.Left, ps.rcPaint.Top, ps.rcPaint.Width, ps.rcPaint.Height,
m_hDcOffscreen, ps.rcPaint.Left, ps.rcPaint.Top, TernaryRasterOperations.SRCCOPY);
NativeMethods.SelectObject(m_hDcOffscreen, hOldBitmap);
if (m_bShowUpdateRect)
{
HPEN hOldPen = NativeMethods.SelectObject(ps.hdc, m_hUpdateRectPen);
NativeMethods.SelectObject(ps.hdc, NativeMethods.GetStockObject(HOLLOW_BRUSH));
NativeMethods.Rectangle(ps.hdc, rcPaint.left, rcPaint.top, rcPaint.right, rcPaint.bottom);
NativeMethods.SelectObject(ps.hdc, hOldPen);
}
}
else
{
int nSaveDC = NativeMethods.SaveDC(ps.hdc);
//TODO::Paint
NativeMethods.RestoreDC(ps.hdc, nSaveDC);
}
NativeMethods.EndPaint(m_hWndPaint, ref ps);
}
#endregion
// If any of the painting requested a resize again, we'll need
// to invalidate the entire window once more.
if (m_bUpdateNeeded)
{
NativeMethods.InvalidateRect(m_hWndPaint, IntPtr.Zero, 0);
}
#endregion
return(true);
case WindowMessages.WM_PRINTCLIENT:
{
#region 处理WM_PRINTCLIENT
RECT rcClient = new RECT();
NativeMethods.GetClientRect(m_hWndPaint, ref rcClient);
HDC hDC = (HDC)wParam;
int save = NativeMethods.SaveDC(hDC);
//TODO::Paint
// Check for traversing children. The crux is that WM_PRINT will assume
// that the DC is positioned at frame coordinates and will paint the child
// control at the wrong position. We'll simulate the entire thing instead.
if ((lParam.ToInt64() & WM_PRINT_Flags.PRF_NONCLIENT) != 0)
{
HWND hWndChild = NativeMethods.GetWindow(m_hWndPaint, GetWindowFlags.GW_CHILD);
while (hWndChild != NativeMethods.NULL)
{
RECT rcPos = new RECT();
NativeMethods.GetWindowRect(hWndChild, ref rcPos);
POINT pt = new POINT()
{
x = rcPos.left, y = rcPos.top
};
NativeMethods.MapWindowPoints(NativeMethods.HWND_DESKTOP, m_hWndPaint, pt, 2);
POINT tmpPt = new POINT();
NativeMethods.SetWindowOrgEx(hDC, -rcPos.left, -rcPos.top, out tmpPt);
// NOTE: We use WM_PRINT here rather than the expected WM_PRINTCLIENT
// since the latter will not print the nonclient correctly for
// EDIT controls.
var newlParam = new IntPtr(lParam.ToInt64() | WM_PRINT_Flags.PRF_NONCLIENT);
NativeMethods.SendMessage(hWndChild, WindowMessages.WM_PRINT, wParam, newlParam);
hWndChild = NativeMethods.GetWindow(hWndChild, GetWindowFlags.GW_HWNDNEXT);
}
}
NativeMethods.RestoreDC(hDC, save);
#endregion
}
break;
case WindowMessages.WM_GETMINMAXINFO:
break;
case WindowMessages.WM_SIZE:
break;
case WindowMessages.WM_TIMER:
break;
case WindowMessages.WM_MOUSEHOVER:
break;
case WindowMessages.WM_MOUSELEAVE:
break;
case WindowMessages.WM_MOUSEMOVE:
break;
case WindowMessages.WM_LBUTTONDOWN:
break;
case WindowMessages.WM_LBUTTONDBLCLK:
break;
case WindowMessages.WM_LBUTTONUP:
break;
case WindowMessages.WM_RBUTTONDOWN:
break;
case WindowMessages.WM_CONTEXTMENU:
break;
case WindowMessages.WM_MOUSEWHEEL:
break;
case WindowMessages.WM_CHAR:
break;
case WindowMessages.WM_KEYDOWN:
break;
case WindowMessages.WM_KEYUP:
break;
case WindowMessages.WM_SETCURSOR:
break;
case WindowMessages.WM_NOTIFY:
break;
case WindowMessages.WM_COMMAND:
break;
case WindowMessages.WM_CTLCOLOREDIT:
case WindowMessages.WM_CTLCOLORSTATIC:
break;
case WM_EFFECTS:
break;
case WM_RELOADSTYLE:
break;
default:
break;
}
//TODO::处理消息队列
return(false);
}
