private void OnWMNCCalcSize(ref Message m)
{
if (!this.EnableNCModification)
{
base.WndProc(ref m);
}
else if (m.WParam == new IntPtr(1))
{
NativeMethods.NCCALCSIZE_PARAMS nccalcsizeParams = new NativeMethods.NCCALCSIZE_PARAMS();
NativeMethods.NCCALCSIZE_PARAMS structure = (NativeMethods.NCCALCSIZE_PARAMS)Marshal.PtrToStructure(m.LParam, typeof(NativeMethods.NCCALCSIZE_PARAMS));
Padding ncMetrics = this.GetNCMetrics();
structure.rgrc[0].top += ncMetrics.Top;
structure.rgrc[0].left += ncMetrics.Left;
structure.rgrc[0].right -= ncMetrics.Right;
structure.rgrc[0].bottom -= ncMetrics.Bottom;
Marshal.StructureToPtr((object)structure, m.LParam, true);
m.Result = IntPtr.Zero;
}
else
{
base.WndProc(ref m);
NativeMethods.RECT rect = new NativeMethods.RECT();
NativeMethods.RECT structure = (NativeMethods.RECT)Marshal.PtrToStructure(m.LParam, typeof(NativeMethods.RECT));
Padding ncMetrics = this.GetNCMetrics();
structure.top += ncMetrics.Top;
structure.left += ncMetrics.Left;
structure.right -= ncMetrics.Right;
structure.bottom -= ncMetrics.Bottom;
Marshal.StructureToPtr((object)structure, m.LParam, true);
m.Result = IntPtr.Zero;
}
}
private void WmNCCalcSize(ref Message m)
{
// http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/winui/windowsuserinterface/windowing/windows/windowreference/windowmessages/wm_nccalcsize.asp
// http://groups.google.pl/groups?selm=OnRNaGfDEHA.1600%40tk2msftngp13.phx.gbl
if (m.WParam == NativeMethods.FALSE)
{
NativeMethods.RECT ncRect = (NativeMethods.RECT)m.GetLParam(typeof(NativeMethods.RECT));
Rectangle proposed = ncRect.Rect;
Log(MethodInfo.GetCurrentMethod(), string.Format("### Client Rect [0] = ({0},{1}) x ({2},{3})",
proposed.Left, proposed.Top, proposed.Width, proposed.Height));
OnNonClientAreaCalcSize(ref proposed, true);
ncRect = NativeMethods.RECT.FromRectangle(proposed);
Marshal.StructureToPtr(ncRect, m.LParam, false);
}
else if (m.WParam == NativeMethods.TRUE)
{
NativeMethods.NCCALCSIZE_PARAMS ncParams = (NativeMethods.NCCALCSIZE_PARAMS)m.GetLParam(typeof(NativeMethods.NCCALCSIZE_PARAMS));
Rectangle proposed = ncParams.rectProposed.Rect;
Log(MethodInfo.GetCurrentMethod(), string.Format("### Client Rect [1] = ({0},{1}) x ({2},{3})",
proposed.Left, proposed.Top, proposed.Width, proposed.Height));
OnNonClientAreaCalcSize(ref proposed, true);
ncParams.rectProposed = NativeMethods.RECT.FromRectangle(proposed);
Marshal.StructureToPtr(ncParams, m.LParam, false);
}
m.Result = IntPtr.Zero;
}
/// <summary>
/// Calculates the size of the window frame and client area of the RichTextBox
/// </summary>
void WmNccalcsize(ref Message m)
{
base.WndProc(ref m);
if (!this.RenderWithVisualStyles())
{
return;
}
NativeMethods.NCCALCSIZE_PARAMS par = new NativeMethods.NCCALCSIZE_PARAMS();
NativeMethods.RECT windowRect;
if (m.WParam == IntPtr.Zero)
{
windowRect = (NativeMethods.RECT)Marshal.PtrToStructure(m.LParam, typeof(NativeMethods.RECT));
}
else
{
par = (NativeMethods.NCCALCSIZE_PARAMS)Marshal.PtrToStructure(m.LParam, typeof(NativeMethods.NCCALCSIZE_PARAMS));
windowRect = par.rgrc0;
}
NativeMethods.RECT contentRect;
IntPtr hDC = NativeMethods.GetWindowDC(this.Handle);
IntPtr hTheme = NativeMethods.OpenThemeData(this.Handle, "EDIT");
if (NativeMethods.GetThemeBackgroundContentRect(hTheme, hDC, NativeMethods.EP_EDITTEXT, NativeMethods.ETS_NORMAL
, ref windowRect
, out contentRect) == NativeMethods.S_OK)
{
contentRect.Inflate(-1, -1);
this.borderRect = new NativeMethods.RECT(contentRect.Left - windowRect.Left
, contentRect.Top - windowRect.Top
, windowRect.Right - contentRect.Right
, windowRect.Bottom - contentRect.Bottom);
if (m.WParam == IntPtr.Zero)
{
Marshal.StructureToPtr(contentRect, m.LParam, false);
}
else
{
par.rgrc0 = contentRect;
Marshal.StructureToPtr(par, m.LParam, false);
}
m.Result = new IntPtr(NativeMethods.WVR_REDRAW);
}
NativeMethods.CloseThemeData(hTheme);
NativeMethods.ReleaseDC(this.Handle, hDC);
}
private void OnWMNCCalcSize(ref Message m)
{
if (m.WParam == new IntPtr(1))
{
NativeMethods.NCCALCSIZE_PARAMS ncCalcSizeParams = new NativeMethods.NCCALCSIZE_PARAMS();
ncCalcSizeParams = (NativeMethods.NCCALCSIZE_PARAMS)
Marshal.PtrToStructure(m.LParam, typeof(NativeMethods.NCCALCSIZE_PARAMS));
Padding calculatedClientMargin = this.ClientMargin;
//This code fixes the issue with the wrong positioning of a MDI child when
//composition is off and the child is maximized.
if (this.Form.IsMdiChild && this.IsMaximized &&
!DWMAPI.IsCompositionEnabled)
{
ncCalcSizeParams.rgrc[0].top = -SystemInformation.FixedFrameBorderSize.Height;
}
ncCalcSizeParams.rgrc[0].top += calculatedClientMargin.Top;
ncCalcSizeParams.rgrc[0].left += calculatedClientMargin.Left;
ncCalcSizeParams.rgrc[0].right -= calculatedClientMargin.Right;
ncCalcSizeParams.rgrc[0].bottom -= calculatedClientMargin.Bottom;
Marshal.StructureToPtr(ncCalcSizeParams, m.LParam, true);
m.Result = IntPtr.Zero;
}
else
{
this.CallBaseWndProc(ref m);
NativeMethods.RECT ncCalcSizeParams = new NativeMethods.RECT();
ncCalcSizeParams = (NativeMethods.RECT)
Marshal.PtrToStructure(m.LParam, typeof(NativeMethods.RECT));
Padding calculatedClientMargin = this.ClientMargin;
//This code fixes the issue with the wrong positioning of a MDI child when
//composition is off and the child is maximized.
if (this.Form.IsMdiChild && this.IsMaximized &&
!DWMAPI.IsCompositionEnabled)
{
ncCalcSizeParams.top = -SystemInformation.FixedFrameBorderSize.Height;
}
ncCalcSizeParams.top += calculatedClientMargin.Top;
ncCalcSizeParams.left += calculatedClientMargin.Left;
ncCalcSizeParams.right -= calculatedClientMargin.Right;
ncCalcSizeParams.bottom -= calculatedClientMargin.Bottom;
Marshal.StructureToPtr(ncCalcSizeParams, m.LParam, true);
m.Result = IntPtr.Zero;
}
}
private void OnWMNCCalcSize(ref System.Windows.Forms.Message m)
{
if (!this.EnableNCModification)
{
base.WndProc(ref m);
return;
}
if (m.WParam == new IntPtr(1))
{
NativeMethods.NCCALCSIZE_PARAMS ncCalcSizeParams = new NativeMethods.NCCALCSIZE_PARAMS();
ncCalcSizeParams = (NativeMethods.NCCALCSIZE_PARAMS)
Marshal.PtrToStructure(m.LParam, typeof(NativeMethods.NCCALCSIZE_PARAMS));
Padding calculatedClientMargin = this.GetNCMetrics();
ncCalcSizeParams.rgrc[0].top += calculatedClientMargin.Top;
ncCalcSizeParams.rgrc[0].left += calculatedClientMargin.Left;
ncCalcSizeParams.rgrc[0].right -= calculatedClientMargin.Right;
ncCalcSizeParams.rgrc[0].bottom -= calculatedClientMargin.Bottom;
Marshal.StructureToPtr(ncCalcSizeParams, m.LParam, true);
m.Result = IntPtr.Zero;
}
else
{
base.WndProc(ref m);
NativeMethods.RECT ncCalcSizeParams = new NativeMethods.RECT();
ncCalcSizeParams = (NativeMethods.RECT)
Marshal.PtrToStructure(m.LParam, typeof(NativeMethods.RECT));
Padding calculatedClientMargin = this.GetNCMetrics();
ncCalcSizeParams.top += calculatedClientMargin.Top;
ncCalcSizeParams.left += calculatedClientMargin.Left;
ncCalcSizeParams.right -= calculatedClientMargin.Right;
ncCalcSizeParams.bottom -= calculatedClientMargin.Bottom;
Marshal.StructureToPtr(ncCalcSizeParams, m.LParam, true);
m.Result = IntPtr.Zero;
}
}
private void OnWMNCCalcSize(ref System.Windows.Forms.Message m)
{
if (m.WParam == new IntPtr(1))
{
NativeMethods.NCCALCSIZE_PARAMS ncCalcSizeParams = new NativeMethods.NCCALCSIZE_PARAMS();
ncCalcSizeParams = (NativeMethods.NCCALCSIZE_PARAMS)
Marshal.PtrToStructure(m.LParam, typeof(NativeMethods.NCCALCSIZE_PARAMS));
int horizontalScrollHeight = this.HorizontalScroll.Visible ? SystemInformation.HorizontalScrollBarHeight : 0;
int verticalScrollWidth = this.VerticalScroll.Visible ? SystemInformation.VerticalScrollBarWidth : 0;
ncCalcSizeParams.rgrc[0].top += 0;
ncCalcSizeParams.rgrc[0].left += this.parentPanel.RootElement.RightToLeft ? -verticalScrollWidth : 0;
ncCalcSizeParams.rgrc[0].right += this.parentPanel.RootElement.RightToLeft ? 0 : verticalScrollWidth;
ncCalcSizeParams.rgrc[0].bottom += horizontalScrollHeight;
Marshal.StructureToPtr(ncCalcSizeParams, m.LParam, true);
m.Result = IntPtr.Zero;
}
else
{
NativeMethods.RECT ncCalcSizeParams = new NativeMethods.RECT();
ncCalcSizeParams = (NativeMethods.RECT)
Marshal.PtrToStructure(m.LParam, typeof(NativeMethods.RECT));
int horizontalScrollHeight = this.HorizontalScroll.Visible ? SystemInformation.HorizontalScrollBarHeight : 0;
int verticalScrollWidth = this.VerticalScroll.Visible ? SystemInformation.VerticalScrollBarWidth : 0;
ncCalcSizeParams.top += 0;
ncCalcSizeParams.left += this.parentPanel.RootElement.RightToLeft ? -verticalScrollWidth : 0;
ncCalcSizeParams.right += this.parentPanel.RootElement.RightToLeft ? 0 : verticalScrollWidth;
ncCalcSizeParams.bottom += horizontalScrollHeight;
Marshal.StructureToPtr(ncCalcSizeParams, m.LParam, true);
m.Result = IntPtr.Zero;
}
base.WndProc(ref m);
}
private void WmNCCalcSize(ref Message m)
{
if (m.WParam == NativeMethods.FALSE)
{
NativeMethods.RECT ncRect = (NativeMethods.RECT)m.GetLParam(typeof(NativeMethods.RECT));
Rectangle proposed = ncRect.Rect;
RecalcNonClientArea(ref proposed);
ncRect = NativeMethods.RECT.FromRectangle(proposed);
Marshal.StructureToPtr(ncRect, m.LParam, false);
}
else if (m.WParam == NativeMethods.TRUE)
{
NativeMethods.NCCALCSIZE_PARAMS ncParams =
(NativeMethods.NCCALCSIZE_PARAMS)m.GetLParam(typeof(NativeMethods.NCCALCSIZE_PARAMS));
Rectangle proposed = ncParams.rectProposed.Rect;
RecalcNonClientArea(ref proposed);
ncParams.rectProposed = NativeMethods.RECT.FromRectangle(proposed);
Marshal.StructureToPtr(ncParams, m.LParam, false);
}
m.Result = IntPtr.Zero;
}
protected override void WndProc(ref Message m)
{
switch (m.Msg)
{
case NativeMethods.WindowsMessage.WM_NCACTIVATE:
if (m.WParam == IntPtr.Zero)
{
m.Result = NativeMethods.MESSAGE_HANDLED;
}
InvalidateWindow();
break;
case NativeMethods.WindowsMessage.WM_SETCURSOR:
case NativeMethods.WindowsMessage.WM_ACTIVATEAPP:
case NativeMethods.WindowsMessage.WM_SIZE:
case NativeMethods.WindowsMessage.WM_MOVE:
{
base.WndProc(ref m);
InvalidateWindow();
}
break;
case NativeMethods.WindowsMessage.WM_NCUAHDRAWCAPTION:
case NativeMethods.WindowsMessage.WM_NCUAHDRAWFRAME:
{
InvalidateWindow();
}
break;
case NativeMethods.WindowsMessage.WM_NCPAINT:
if (NativeMethods.IsWindowVisible(FormHandle))
{
DrawWindow(m.WParam);
m.Result = NativeMethods.MESSAGE_HANDLED;
}
break;
case NativeMethods.WindowsMessage.WM_NCCALCSIZE:
if (m.WParam != IntPtr.Zero)
{
NativeMethods.NCCALCSIZE_PARAMS ncsize = (NativeMethods.NCCALCSIZE_PARAMS)Marshal.PtrToStructure(m.LParam, typeof(NativeMethods.NCCALCSIZE_PARAMS));
NativeMethods.WINDOWPOS wp = (NativeMethods.WINDOWPOS)Marshal.PtrToStructure(ncsize.lppos, typeof(NativeMethods.WINDOWPOS));
// store original frame sizes
if (!_bStoreSize)
{
_bStoreSize = true;
_iCaptionHeight = ncsize.rect2.Top - ncsize.rect0.Top;
_iFrameHeight = ncsize.rect0.Bottom - ncsize.rect2.Bottom;
_iFrameWidth = ncsize.rect2.Left - ncsize.rect0.Left;
}
if (!_bResetSize)
{
ncsize.rect0 = CalculateFrameSize(wp.x, wp.y, wp.cx, wp.cy);
ncsize.rect1 = ncsize.rect0;
}
Marshal.StructureToPtr(ncsize, m.LParam, false);
m.Result = (IntPtr)0x400; //WVR_VALIDRECTS;
}
else
{
NativeMethods.RECT rc = (NativeMethods.RECT)m.GetLParam(typeof(NativeMethods.RECT));
rc = CalculateFrameSize(rc.Left, rc.Top, rc.Right - rc.Left, rc.Bottom - rc.Top);;
Marshal.StructureToPtr(rc, m.LParam, true);
m.Result = IntPtr.Zero; //MESSAGE_PROCESS;
}
base.WndProc(ref m);
break;
default:
base.WndProc(ref m);
break;
}
}
/// <summary>
/// Calculates the size of the window frame and client area of the RichTextBox
/// </summary>
void WmNccalcsize(ref Message m)
{
// let the richtextbox control draw the scrollbar if necessary.
base.WndProc(ref m);
// we visual styles are not enabled and BorderStyle is not Fixed3D then we have nothing more to do.
if(!this.RenderWithVisualStyles())
return;
// contains detailed information about WM_NCCALCSIZE message
NativeMethods.NCCALCSIZE_PARAMS par = new NativeMethods.NCCALCSIZE_PARAMS();
// contains the window frame RECT
NativeMethods.RECT windowRect;
if(m.WParam == IntPtr.Zero) // LParam points to a RECT struct
{
windowRect = (NativeMethods.RECT)Marshal.PtrToStructure(m.LParam, typeof(NativeMethods.RECT));
}
else // LParam points to a NCCALCSIZE_PARAMS struct
{
par = (NativeMethods.NCCALCSIZE_PARAMS)Marshal.PtrToStructure(m.LParam, typeof(NativeMethods.NCCALCSIZE_PARAMS));
windowRect = par.rgrc0;
}
// contains the client area of the control
NativeMethods.RECT contentRect;
// get the DC
IntPtr hDC = NativeMethods.GetWindowDC(this.Handle);
// open theme data
IntPtr hTheme = NativeMethods.OpenThemeData(this.Handle, "EDIT");
// find out how much space the borders needs
if(NativeMethods.GetThemeBackgroundContentRect(hTheme, hDC, NativeMethods.EP_EDITTEXT, NativeMethods.ETS_NORMAL
, ref windowRect
, out contentRect) == NativeMethods.S_OK)
{
// shrink the client area the make more space for containing text.
contentRect.Inflate(-1, -1);
// remember the space of the borders
this.borderRect = new NativeMethods.RECT(contentRect.Left-windowRect.Left
, contentRect.Top-windowRect.Top
, windowRect.Right-contentRect.Right
, windowRect.Bottom-contentRect.Bottom);
// update LParam of the message with the new client area
if(m.WParam == IntPtr.Zero)
{
Marshal.StructureToPtr(contentRect, m.LParam, false);
}
else
{
par.rgrc0 = contentRect;
Marshal.StructureToPtr(par, m.LParam, false);
}
// force the control to redraw it´s client area
m.Result = new IntPtr(NativeMethods.WVR_REDRAW);
}
// release theme data handle
NativeMethods.CloseThemeData(hTheme);
// release DC
NativeMethods.ReleaseDC(this.Handle, hDC);
}
/// <summary>
/// Calculates the size of the window frame and client area of the RichTextBox
/// </summary>
void WmNccalcsize(ref Message m)
{
// let the richtextbox control draw the scrollbar if necessary.
base.WndProc(ref m);
// we visual styles are not enabled and BorderStyle is not Fixed3D then we have nothing more to do.
if (!this.RenderWithVisualStyles())
{
return;
}
// contains detailed information about WM_NCCALCSIZE message
NativeMethods.NCCALCSIZE_PARAMS par = new NativeMethods.NCCALCSIZE_PARAMS();
// contains the window frame RECT
NativeMethods.RECT windowRect;
if (m.WParam == IntPtr.Zero) // LParam points to a RECT struct
{
windowRect = (NativeMethods.RECT)Marshal.PtrToStructure(m.LParam, typeof(NativeMethods.RECT));
}
else // LParam points to a NCCALCSIZE_PARAMS struct
{
par = (NativeMethods.NCCALCSIZE_PARAMS)Marshal.PtrToStructure(m.LParam, typeof(NativeMethods.NCCALCSIZE_PARAMS));
windowRect = par.rgrc0;
}
// contains the client area of the control
NativeMethods.RECT contentRect;
// get the DC
IntPtr hDC = NativeMethods.GetWindowDC(this.Handle);
// open theme data
IntPtr hTheme = NativeMethods.OpenThemeData(this.Handle, "EDIT");
// find out how much space the borders needs
if (NativeMethods.GetThemeBackgroundContentRect(hTheme, hDC, NativeMethods.EP_EDITTEXT, NativeMethods.ETS_NORMAL
, ref windowRect
, out contentRect) == NativeMethods.S_OK)
{
// shrink the client area the make more space for containing text.
contentRect.Inflate(-1, -1);
// remember the space of the borders
this.borderRect = new NativeMethods.RECT(contentRect.Left - windowRect.Left
, contentRect.Top - windowRect.Top
, windowRect.Right - contentRect.Right
, windowRect.Bottom - contentRect.Bottom);
// update LParam of the message with the new client area
if (m.WParam == IntPtr.Zero)
{
Marshal.StructureToPtr(contentRect, m.LParam, false);
}
else
{
par.rgrc0 = contentRect;
Marshal.StructureToPtr(par, m.LParam, false);
}
// force the control to redraw it磗 client area
m.Result = new IntPtr(NativeMethods.WVR_REDRAW);
}
// release theme data handle
NativeMethods.CloseThemeData(hTheme);
// release DC
NativeMethods.ReleaseDC(this.Handle, hDC);
}
