[DllImport("user32.dll")]//在桌面找寻子窗体
public static extern IntPtr ChildWindowFromPointEx(IntPtr pHwnd, NativeMethods.Point pt, uint uFlgs);
public void SetBits()
{
if (BackgroundImage != null)
{
//绘制绘图层背景
Bitmap bitmap = new Bitmap(BackgroundImage, base.Width, base.Height);
if (!Bitmap.IsCanonicalPixelFormat(bitmap.PixelFormat) || !Bitmap.IsAlphaPixelFormat(bitmap.PixelFormat))
throw new ApplicationException("图片必须是32位带Alhpa通道的图片。");
IntPtr oldBits = IntPtr.Zero;
IntPtr screenDC = NativeMethods.GetDC(IntPtr.Zero);
IntPtr hBitmap = IntPtr.Zero;
IntPtr memDc = NativeMethods.CreateCompatibleDC(screenDC);
try
{
NativeMethods.Point topLoc = new NativeMethods.Point(Left, Top);
NativeMethods.Size bitMapSize = new NativeMethods.Size(Width, Height);
NativeMethods.BLENDFUNCTION blendFunc = new NativeMethods.BLENDFUNCTION();
NativeMethods.Point srcLoc = new NativeMethods.Point(0, 0);
hBitmap = bitmap.GetHbitmap(Color.FromArgb(0));
oldBits = NativeMethods.SelectObject(memDc, hBitmap);
blendFunc.BlendOp = AC.AC_SRC_OVER;
blendFunc.SourceConstantAlpha = Byte.Parse("255");
blendFunc.AlphaFormat = AC.AC_SRC_ALPHA;
blendFunc.BlendFlags = 0;
NativeMethods.UpdateLayeredWindow(Handle, screenDC, ref topLoc, ref bitMapSize, memDc, ref srcLoc, 0, ref blendFunc, NativeMethods.ULW_ALPHA);
}
finally
{
if (hBitmap != IntPtr.Zero)
{
NativeMethods.SelectObject(memDc, oldBits);
NativeMethods.DeleteObject(hBitmap);
}
NativeMethods.ReleaseDC(IntPtr.Zero, screenDC);
NativeMethods.DeleteDC(memDc);
}
}
}
public void SetBits()
{
//绘制绘图层背景
Bitmap bitmap = new Bitmap(Main.Width + Main.ShadowWidth * 2, Main.Height + Main.ShadowWidth * 2);
//Rectangle _BacklightLTRB = new Rectangle(20, 20, 20, 20);//窗体光泽重绘边界
Graphics g = Graphics.FromImage(bitmap);
g.SmoothingMode = SmoothingMode.HighQuality; //高质量
g.PixelOffsetMode = PixelOffsetMode.HighQuality; //高像素偏移质量
DrawShadow(g);
//ImageDrawRect.DrawRect(g, Properties.Resources.main_light_bkg_top123, ClientRectangle, Rectangle.FromLTRB(_BacklightLTRB.X, _BacklightLTRB.Y, _BacklightLTRB.Width, _BacklightLTRB.Height), 1, 1);
if (!Bitmap.IsCanonicalPixelFormat(bitmap.PixelFormat) || !Bitmap.IsAlphaPixelFormat(bitmap.PixelFormat))
throw new ApplicationException("图片必须是32位带Alhpa通道的图片。");
IntPtr oldBits = IntPtr.Zero;
IntPtr screenDC = NativeMethods.GetDC(IntPtr.Zero);
IntPtr hBitmap = IntPtr.Zero;
IntPtr memDc = NativeMethods.CreateCompatibleDC(screenDC);
try
{
NativeMethods.Point topLoc = new NativeMethods.Point(Left, Top);
NativeMethods.Size bitMapSize = new NativeMethods.Size(Width, Height);
NativeMethods.BLENDFUNCTION blendFunc = new NativeMethods.BLENDFUNCTION();
NativeMethods.Point srcLoc = new NativeMethods.Point(0, 0);
hBitmap = bitmap.GetHbitmap(Color.FromArgb(0));
oldBits = NativeMethods.SelectObject(memDc, hBitmap);
blendFunc.BlendOp = AC.AC_SRC_OVER;
blendFunc.SourceConstantAlpha = Byte.Parse("255");
blendFunc.AlphaFormat = AC.AC_SRC_ALPHA;
blendFunc.BlendFlags = 0;
NativeMethods.UpdateLayeredWindow(Handle, screenDC, ref topLoc, ref bitMapSize, memDc, ref srcLoc, 0, ref blendFunc, NativeMethods.ULW_ALPHA);
}
finally
{
if (hBitmap != IntPtr.Zero)
{
NativeMethods.SelectObject(memDc, oldBits);
NativeMethods.DeleteObject(hBitmap);
}
NativeMethods.ReleaseDC(IntPtr.Zero, screenDC);
NativeMethods.DeleteDC(memDc);
}
}
private ScrollBarHistTest ScrollBarHitTest(IntPtr hWnd)
{
NativeMethods.Point point = new NativeMethods.Point();
RECT rect = new RECT();
Point thumbPoint = GetScrollBarThumb();
int arrowCx = ArrowCx;
int arrowCy = ArrowCy;
NativeMethods.GetWindowRect(hWnd, ref rect);
NativeMethods.OffsetRect(ref rect, -rect.Left, -rect.Top);
RECT tp = rect;
NativeMethods.GetCursorPos(ref point);
NativeMethods.ScreenToClient(hWnd, ref point);
if (Direction == Orientation.Horizontal)
{
if (NativeMethods.PtInRect(ref rect, point))
{
// left arrow
tp.Right = arrowCx;
if (NativeMethods.PtInRect(ref tp, point))
{
return ScrollBarHistTest.LeftArrow;
}
// right arrow
tp.Left = rect.Right - arrowCx;
tp.Right = rect.Right;
if (NativeMethods.PtInRect(ref tp, point))
{
return ScrollBarHistTest.RightArrow;
}
// button
if (_owner.RightToLeft == RightToLeft.Yes)
{
tp.Left = point.y;
tp.Right = point.x;
}
else
{
tp.Left = thumbPoint.X;
tp.Right = thumbPoint.Y;
}
if (NativeMethods.PtInRect(ref tp, point))
{
return ScrollBarHistTest.Thumb;
}
// track
return ScrollBarHistTest.Track;
}
}
else
{
if (NativeMethods.PtInRect(ref rect, point))
{
// top arrow
tp.Bottom = arrowCy;
if (NativeMethods.PtInRect(ref tp, point))
{
return ScrollBarHistTest.TopArrow;
}
// bottom arrow
tp.Top = rect.Bottom - arrowCy;
tp.Bottom = rect.Bottom;
if (NativeMethods.PtInRect(ref tp, point))
{
return ScrollBarHistTest.BottomArrow;
}
// button
tp.Top = thumbPoint.X;
tp.Bottom = thumbPoint.Y;
if (NativeMethods.PtInRect(ref tp, point))
{
return ScrollBarHistTest.Thumb;
}
// track
return ScrollBarHistTest.Track;
}
}
return ScrollBarHistTest.None;
}
/// <summary>
///
/// </summary>
/// <param name="hWnd">被覆盖控件句柄。</param>
internal void CreateParamsInternal(IntPtr hWnd)
{
IntPtr hParent = NativeMethods.GetParent(hWnd);
RECT rect = new RECT();
NativeMethods.Point point = new NativeMethods.Point();
NativeMethods.GetWindowRect(hWnd, ref rect);
point.x = rect.Left;
point.y = rect.Top;
NativeMethods.ScreenToClient(hParent, ref point);
int dwStyle =
SS.SS_OWNERDRAW |
WS.WS_CHILD |
WS.WS_CLIPSIBLINGS |
WS.WS_OVERLAPPED | WS.WS_VISIBLE;
int dwExStyle = WS_EX.WS_EX_TOPMOST | WS_EX.WS_EX_TOOLWINDOW;
_createParams = new CreateParams();
_createParams.Parent = hParent;
_createParams.ClassName = ClassName.STATIC;
_createParams.Caption = null;
_createParams.Style = dwStyle;
_createParams.ExStyle = dwExStyle;
_createParams.X = point.x;
_createParams.Y = point.y;
_createParams.Width = rect.Right - rect.Left;
_createParams.Height = rect.Bottom - rect.Top;
}
/// <summary>
///
/// </summary>
/// <param name="hWnd">被覆盖控件句柄。</param>
internal void CheckBounds(IntPtr hWnd)
{
RECT controlRect = new RECT();
RECT maskRect = new RECT();
NativeMethods.GetWindowRect(base.Handle, ref maskRect);
NativeMethods.GetWindowRect(hWnd, ref controlRect);
uint uFlag =
SWP.SWP_NOACTIVATE |
SWP.SWP_NOOWNERZORDER |
SWP.SWP_NOZORDER;
if (!NativeMethods.EqualRect(ref controlRect, ref maskRect))
{
NativeMethods.Point point = new NativeMethods.Point(controlRect.Left, controlRect.Top);
IntPtr hParent = NativeMethods.GetParent(base.Handle);
NativeMethods.ScreenToClient(hParent, ref point);
NativeMethods.SetWindowPos(
base.Handle,
IntPtr.Zero,
point.x,
point.y,
controlRect.Right - controlRect.Left,
controlRect.Bottom - controlRect.Top,
uFlag);
}
}