protected override LResult WindowProcedure(WindowHandle window, MessageType message, WParam wParam, LParam lParam)
{
switch (message)
{
case MessageType.Create:
window.SetWindowLong(0, IntPtr.Zero); // on/off flag
return(0);
case MessageType.LeftButtonDown:
window.SetWindowLong(0, (IntPtr)(1 ^ (int)window.GetWindowLong(0)));
window.Invalidate(false);
return(0);
case MessageType.Paint:
using (DeviceContext dc = window.BeginPaint())
{
Rectangle rect = window.GetClientRectangle();
dc.Rectangle(rect);
if (window.GetWindowLong(0) != IntPtr.Zero)
{
dc.MoveTo(default);
dc.LineTo(new Point(rect.Right, rect.Bottom));
dc.MoveTo(new Point(0, rect.Bottom));
dc.LineTo(new Point(rect.Right, 0));
}
}
protected override LResult WindowProcedure(WindowHandle window, MessageType message, WParam wParam, LParam lParam)
{
switch (message)
{
case MessageType.Size:
cxClient = lParam.LowWord;
cyClient = lParam.HighWord;
return(0);
case MessageType.Paint:
using (DeviceContext dc = window.BeginPaint())
{
dc.MoveTo(new Point(0, cyClient / 2));
dc.LineTo(new Point(cxClient, cyClient / 2));
for (int i = 0; i < apt.Length; i++)
{
apt[i].X = i * cxClient / apt.Length;
apt[i].Y = (int)(cyClient / 2 * (1 - Math.Sin(Math.PI * 2 * i / apt.Length)));
}
dc.Polyline(apt);
}
return(0);
}
return(base.WindowProcedure(window, message, wParam, lParam));
}
protected override LResult WindowProcedure(WindowHandle window, MessageType message, WParam wParam, LParam lParam)
{
switch (message)
{
case MessageType.Create:
using (DeviceContext dc = window.GetDeviceContext())
{
dc.GetTextMetrics(out TextMetrics tm);
cxChar = tm.AverageCharWidth;
cxCaps = ((tm.PitchAndFamily.PitchTypes & FontPitchTypes.VariablePitch) != 0 ? 3 : 2) * cxChar / 2;
cyChar = tm.Height + tm.ExternalLeading;
}
return(0);
case MessageType.Paint:
using (DeviceContext dc = window.BeginPaint())
{
int i = 0;
foreach (SystemMetric metric in Metrics.SystemMetrics.Keys)
{
dc.TextOut(new Point(0, cyChar * i), metric.ToString().AsSpan());
dc.TextOut(new Point(22 * cxCaps, cyChar * i), Metrics.SystemMetrics[metric].AsSpan());
dc.SetTextAlignment(new TextAlignment(TextAlignment.Horizontal.Right, TextAlignment.Vertical.Top));
dc.TextOut(new Point(22 * cxCaps + 40 * cxChar, cyChar * i), Windows.GetSystemMetrics(metric).ToString().AsSpan());
dc.SetTextAlignment(new TextAlignment(TextAlignment.Horizontal.Left, TextAlignment.Vertical.Top));
i++;
}
}
return(0);
}
return(base.WindowProcedure(window, message, wParam, lParam));
}
static LRESULT ChildWindowProcedure(WindowHandle window, WindowMessage message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WindowMessage.Create:
window.SetWindowLong(0, IntPtr.Zero); // on/off flag
return(0);
case WindowMessage.LeftButtonDown:
window.SetWindowLong(0, (IntPtr)(1 ^ (int)window.GetWindowLong(0)));
window.Invalidate(false);
return(0);
case WindowMessage.Paint:
using (DeviceContext dc = window.BeginPaint())
{
RECT rect = window.GetClientRectangle();
dc.Rectangle(rect);
if (window.GetWindowLong(0) != IntPtr.Zero)
{
dc.MoveTo(0, 0);
dc.LineTo(rect.right, rect.bottom);
dc.MoveTo(0, rect.bottom);
dc.LineTo(rect.right, 0);
}
}
return(0);
}
return(Windows.DefaultWindowProcedure(window, message, wParam, lParam));
}
static LRESULT WindowProcedure(WindowHandle window, WindowMessage message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WindowMessage.Size:
cxClient = lParam.LowWord;
cyClient = lParam.HighWord;
return(0);
case WindowMessage.Paint:
using (DeviceContext dc = window.BeginPaint())
{
dc.Rectangle(cxClient / 8, cyClient / 8, 7 * cxClient / 8, 7 * cyClient / 8);
dc.MoveTo(0, 0);
dc.LineTo(cxClient, cyClient);
dc.MoveTo(0, cyClient);
dc.LineTo(cxClient, 0);
dc.Ellipse(cxClient / 8, cyClient / 8, 7 * cxClient / 8, 7 * cyClient / 8);
dc.RoundRectangle(cxClient / 4, cyClient / 4, 3 * cxClient / 4, 3 * cyClient / 4,
cxClient / 4, cyClient / 4);
}
return(0);
case WindowMessage.Destroy:
Windows.PostQuitMessage(0);
return(0);
}
return(Windows.DefaultWindowProcedure(window, message, wParam, lParam));
}
protected override LResult WindowProcedure(WindowHandle window, MessageType message, WParam wParam, LParam lParam)
{
switch (message)
{
case MessageType.Create:
window.SetTimer(ID_TIMER, 1000);
return(0);
case MessageType.Timer:
Windows.MessageBeep();
fFlipFlop = !fFlipFlop;
window.Invalidate();
return(0);
case MessageType.Paint:
using (DeviceContext dc = window.BeginPaint())
{
using (BrushHandle brush = Gdi.CreateSolidBrush(fFlipFlop ? Color.Red : Color.Blue))
{
dc.FillRectangle(window.GetClientRectangle(), brush);
}
}
return(0);
case MessageType.Destroy:
window.KillTimer(ID_TIMER);
break;
}
return(base.WindowProcedure(window, message, wParam, lParam));
}
private static LResult WindowProcedure(WindowHandle window, MessageType message, WParam wParam, LParam lParam)
{
switch (message)
{
case MessageType.Size:
s_cxClient = lParam.LowWord;
s_cyClient = lParam.HighWord;
return(0);
case MessageType.Paint:
using (DeviceContext dc = window.BeginPaint())
{
dc.Rectangle(Rectangle.FromLTRB(s_cxClient / 8, s_cyClient / 8, 7 * s_cxClient / 8, 7 * s_cyClient / 8));
dc.MoveTo(new Point(0, 0));
dc.LineTo(new Point(s_cxClient, s_cyClient));
dc.MoveTo(new Point(0, s_cyClient));
dc.LineTo(new Point(s_cxClient, 0));
dc.Ellipse(Rectangle.FromLTRB(s_cxClient / 8, s_cyClient / 8, 7 * s_cxClient / 8, 7 * s_cyClient / 8));
dc.RoundRectangle(
Rectangle.FromLTRB(s_cxClient / 4, s_cyClient / 4, 3 * s_cxClient / 4, 3 * s_cyClient / 4),
new Size(s_cxClient / 4, s_cyClient / 4));
}
return(0);
case MessageType.Destroy:
Windows.PostQuitMessage(0);
return(0);
}
return(Windows.DefaultWindowProcedure(window, message, wParam, lParam));
}
protected override LResult WindowProcedure(WindowHandle window, MessageType message, WParam wParam, LParam lParam)
{
switch (message)
{
case MessageType.Create:
window.SetTimer(ID_TIMER, 1000);
_previousTime = SystemInformation.GetLocalTime();
return 0;
case MessageType.Size:
_clientSize = new Message.Size(wParam, lParam).NewSize;
return 0;
case MessageType.Timer:
SystemTime time = SystemInformation.GetLocalTime();
bool drawAllHands = time.Hour != _previousTime.Hour ||
time.Minute != _previousTime.Minute;
using (DeviceContext dc = window.GetDeviceContext())
{
SetIsotropic(dc);
DrawHands(dc, _previousTime, erase: true, drawAllHands);
DrawHands(dc, time);
}
_previousTime = time;
return 0;
case MessageType.Paint:
using (DeviceContext dc = window.BeginPaint())
{
SetIsotropic(dc);
DrawClock(dc);
DrawHands(dc, _previousTime);
}
return 0;
}
return base.WindowProcedure(window, message, wParam, lParam);
}
static LRESULT WindowProcedure(WindowHandle window, WindowMessage message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WindowMessage.Create:
window.SetTimer(ID_TIMER, 1000);
return(0);
case WindowMessage.Timer:
Windows.MessageBeep();
fFlipFlop = !fFlipFlop;
window.Invalidate();
return(0);
case WindowMessage.Paint:
using (DeviceContext dc = window.BeginPaint())
{
RECT rect = window.GetClientRectangle();
using (BrushHandle brush = fFlipFlop ? Windows.CreateSolidBrush(255, 0, 0) : Windows.CreateSolidBrush(0, 0, 255))
{
dc.FillRectangle(rect, brush);
}
}
return(0);
case WindowMessage.Destroy:
window.KillTimer(ID_TIMER);
Windows.PostQuitMessage(0);
return(0);
}
return(Windows.DefaultWindowProcedure(window, message, wParam, lParam));
}
private static LResult WindowProcedure(WindowHandle window, MessageType message, WParam wParam, LParam lParam)
{
switch (message)
{
case MessageType.Create:
Multimedia.PlaySound(PlaySoundAlias.SystemHand, PlaySoundOptions.Async | PlaySoundOptions.NoDefault);
return(0);
case MessageType.Paint:
using (DeviceContext dc = window.BeginPaint())
{
dc.DrawText(
"Hello, Windows 98!",
window.GetClientRectangle(),
TextFormat.SingleLine | TextFormat.Center | TextFormat.VerticallyCenter);
}
return(0);
case MessageType.Destroy:
Windows.PostQuitMessage(0);
return(0);
}
return(Windows.DefaultWindowProcedure(window, message, wParam, lParam));
}
static LRESULT WindowProcedure(WindowHandle window, WindowMessage message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WindowMessage.Size:
cxClient = lParam.LowWord;
cyClient = lParam.HighWord;
return(0);
case WindowMessage.Paint:
using (DeviceContext dc = window.BeginPaint())
{
dc.MoveTo(0, cyClient / 2);
dc.LineTo(cxClient, cyClient / 2);
POINT[] apt = new POINT[1000];
for (int i = 0; i < apt.Length; i++)
{
apt[i].x = i * cxClient / apt.Length;
apt[i].y = (int)(cyClient / 2 * (1 - Math.Sin(Math.PI * 2 * i / apt.Length)));
}
dc.Polyline(apt);
}
return(0);
case WindowMessage.Destroy:
Windows.PostQuitMessage(0);
return(0);
}
return(Windows.DefaultWindowProcedure(window, message, wParam, lParam));
}
protected override LResult WindowProcedure(WindowHandle window, MessageType message, WParam wParam, LParam lParam)
{
switch (message)
{
case MessageType.LeftButtonDown:
_ptBeg.X = _ptEnd.X = lParam.LowWord;
_ptBeg.Y = _ptEnd.Y = lParam.HighWord;
DrawBoxOutline(window, _ptBeg, _ptEnd);
window.SetCapture();
Windows.SetCursor(CursorId.Cross);
_fBlocking = true;
return(0);
case MessageType.MouseMove:
if (_fBlocking)
{
Windows.SetCursor(CursorId.Cross);
DrawBoxOutline(window, _ptBeg, _ptEnd);
_ptEnd.X = lParam.LowWord;
_ptEnd.Y = lParam.HighWord;
DrawBoxOutline(window, _ptBeg, _ptEnd);
}
return(0);
case MessageType.LeftButtonUp:
if (_fBlocking)
{
DrawBoxOutline(window, _ptBeg, _ptEnd);
_ptBoxBeg = _ptBeg;
_ptBoxEnd.X = lParam.LowWord;
_ptBoxEnd.Y = lParam.HighWord;
Windows.ReleaseCapture();
Windows.SetCursor(CursorId.Arrow);
_fBlocking = false;
_fValidBox = true;
window.Invalidate(true);
}
return(0);
case MessageType.Paint:
using (DeviceContext dc = window.BeginPaint())
{
if (_fValidBox)
{
dc.SelectObject(StockBrush.Black);
dc.Rectangle(Rectangle.FromLTRB(_ptBoxBeg.X, _ptBoxBeg.Y, _ptBoxEnd.X, _ptBoxEnd.Y));
}
if (_fBlocking)
{
dc.SetRasterOperation(PenMixMode.Not);
dc.SelectObject(StockBrush.Null);
dc.Rectangle(Rectangle.FromLTRB(_ptBeg.X, _ptBeg.Y, _ptEnd.X, _ptEnd.Y));
}
}
return(0);
}
return(base.WindowProcedure(window, message, wParam, lParam));
}
protected override LResult WindowProcedure(WindowHandle window, MessageType message, WParam wParam, LParam lParam)
{
switch (message)
{
case MessageType.Size:
int cxClient = lParam.LowWord;
int cyClient = lParam.HighWord;
_apt[0].X = cxClient / 4;
_apt[0].Y = cyClient / 2;
_apt[1].X = cxClient / 2;
_apt[1].Y = cyClient / 4;
_apt[2].X = cxClient / 2;
_apt[2].Y = 3 * cyClient / 4;
_apt[3].X = 3 * cxClient / 4;
_apt[3].Y = cyClient / 2;
return(0);
case MessageType.LeftButtonDown:
case MessageType.RightButtonDown:
case MessageType.MouseMove:
MouseKey mk = (MouseKey)wParam.LowWord;
if ((mk & (MouseKey.LeftButton | MouseKey.RightButton)) != 0)
{
using (DeviceContext dc = window.GetDeviceContext())
{
dc.SelectObject(StockPen.White);
DrawBezier(dc, _apt);
if ((mk & MouseKey.LeftButton) != 0)
{
_apt[1].X = lParam.LowWord;
_apt[1].Y = lParam.HighWord;
}
if ((mk & MouseKey.RightButton) != 0)
{
_apt[2].X = lParam.LowWord;
_apt[2].Y = lParam.HighWord;
}
dc.SelectObject(StockPen.Black);
DrawBezier(dc, _apt);
}
}
return(0);
case MessageType.Paint:
window.Invalidate(true);
using (DeviceContext dc = window.BeginPaint())
{
DrawBezier(dc, _apt);
}
return(0);
}
return(base.WindowProcedure(window, message, wParam, lParam));
}
static LRESULT WindowProcedure(WindowHandle window, WindowMessage message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WindowMessage.Size:
cxBlock = lParam.LowWord / DIVISIONS;
cyBlock = lParam.HighWord / DIVISIONS;
return(0);
case WindowMessage.LeftButtonDown:
int x = lParam.LowWord / cxBlock;
int y = lParam.HighWord / cyBlock;
if (x < DIVISIONS && y < DIVISIONS)
{
fState[x, y] ^= true;
RECT rect = new RECT
{
left = x * cxBlock,
top = y * cyBlock,
right = (x + 1) * cxBlock,
bottom = (y + 1) * cyBlock
};
window.InvalidateRectangle(rect, false);
}
else
{
ErrorMethods.MessageBeep(0);
}
return(0);
case WindowMessage.Paint:
using (DeviceContext dc = window.BeginPaint())
{
for (x = 0; x < DIVISIONS; x++)
{
for (y = 0; y < DIVISIONS; y++)
{
dc.Rectangle(x * cxBlock, y * cyBlock,
(x + 1) * cxBlock, (y + 1) * cyBlock);
if (fState[x, y])
{
dc.MoveTo(x * cxBlock, y * cyBlock);
dc.LineTo((x + 1) * cxBlock, (y + 1) * cyBlock);
dc.MoveTo(x * cxBlock, (y + 1) * cyBlock);
dc.LineTo((x + 1) * cxBlock, y * cyBlock);
}
}
}
}
return(0);
case WindowMessage.Destroy:
Windows.PostQuitMessage(0);
return(0);
}
return(Windows.DefaultWindowProcedure(window, message, wParam, lParam));
}
public DoubleBufferPaint(WindowHandle window)
{
_client = window.GetClientRectangle();
_originalDC = window.BeginPaint();
DeviceContext = _originalDC.CreateCompatibleDeviceContext();
_bitmap = DeviceContext.CreateCompatibleBitmap(_client.Size);
DeviceContext.SelectObject(_bitmap);
}
protected override LResult WindowProcedure(WindowHandle window, MessageType message, WParam wParam, LParam lParam)
{
switch (message)
{
case MessageType.Size:
cxBlock = lParam.LowWord / DIVISIONS;
cyBlock = lParam.HighWord / DIVISIONS;
return(0);
case MessageType.LeftButtonDown:
int x = lParam.LowWord / cxBlock;
int y = lParam.HighWord / cyBlock;
if (x < DIVISIONS && y < DIVISIONS)
{
fState[x, y] ^= true;
Rectangle rect = Rectangle.FromLTRB
(
x * cxBlock,
y * cyBlock,
(x + 1) * cxBlock,
(y + 1) * cyBlock
);
window.InvalidateRectangle(rect, false);
}
else
{
Windows.MessageBeep(0);
}
return(0);
case MessageType.Paint:
using (DeviceContext dc = window.BeginPaint())
{
for (x = 0; x < DIVISIONS; x++)
{
for (y = 0; y < DIVISIONS; y++)
{
dc.Rectangle(new Rectangle(
x * cxBlock, y * cyBlock, (x + 1) * cxBlock, (y + 1) * cyBlock));
if (fState[x, y])
{
dc.MoveTo(new Point(x * cxBlock, y * cyBlock));
dc.LineTo(new Point((x + 1) * cxBlock, (y + 1) * cyBlock));
dc.MoveTo(new Point(x * cxBlock, (y + 1) * cyBlock));
dc.LineTo(new Point((x + 1) * cxBlock, y * cyBlock));
}
}
}
}
return(0);
}
return(base.WindowProcedure(window, message, wParam, lParam));
}
static LRESULT WindowProcedure(WindowHandle window, WindowMessage message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WindowMessage.LeftButtonDown:
iCount = 0;
window.Invalidate(true);
return(0);
case WindowMessage.MouseMove:
// Machines are way to fast to make this look interesting now, adding TakeEvery
if ((MouseKey)wParam == MouseKey.LeftButton && iCount < MAXPOINTS && (sampleCount++ % TakeEvery == 0))
{
pt[iCount].x = lParam.LowWord;
pt[iCount++].y = lParam.HighWord;
using (DeviceContext dc = window.GetDeviceContext())
{
dc.SetPixel(lParam.LowWord, lParam.HighWord, 0);
}
}
return(0);
case WindowMessage.LeftButtonUp:
window.Invalidate(false);
return(0);
case WindowMessage.Paint:
using (DeviceContext dc = window.BeginPaint())
{
Windows.SetCursor(CursorId.Wait);
Windows.ShowCursor(true);
for (int i = 0; i < iCount - 1; i++)
{
for (int j = i + 1; j < iCount; j++)
{
dc.MoveTo(pt[i].x, pt[i].y);
dc.LineTo(pt[j].x, pt[j].y);
}
}
Windows.ShowCursor(false);
Windows.SetCursor(CursorId.Arrow);
}
return(0);
case WindowMessage.Destroy:
Windows.PostQuitMessage(0);
return(0);
}
return(Windows.DefaultWindowProcedure(window, message, wParam, lParam));
}
protected override LResult WindowProcedure(WindowHandle window, MessageType message, WParam wParam, LParam lParam)
{
switch (message)
{
case MessageType.Size:
cxClient = lParam.LowWord;
cyClient = lParam.HighWord;
CursorHandle hCursor = Windows.SetCursor(CursorId.Wait);
Windows.ShowCursor(true);
hRgnClip.Dispose();
Span <RegionHandle> hRgnTemp = stackalloc RegionHandle[6];
hRgnTemp[0] = Gdi.CreateEllipticRegion(Rectangle.FromLTRB(0, cyClient / 3, cxClient / 2, 2 * cyClient / 3));
hRgnTemp[1] = Gdi.CreateEllipticRegion(Rectangle.FromLTRB(cxClient / 2, cyClient / 3, cxClient, 2 * cyClient / 3));
hRgnTemp[2] = Gdi.CreateEllipticRegion(Rectangle.FromLTRB(cxClient / 3, 0, 2 * cxClient / 3, cyClient / 2));
hRgnTemp[3] = Gdi.CreateEllipticRegion(Rectangle.FromLTRB(cxClient / 3, cyClient / 2, 2 * cxClient / 3, cyClient));
hRgnTemp[4] = Gdi.CreateRectangleRegion(Rectangle.FromLTRB(0, 0, 1, 1));
hRgnTemp[5] = Gdi.CreateRectangleRegion(Rectangle.FromLTRB(0, 0, 1, 1));
hRgnClip = Gdi.CreateRectangleRegion(Rectangle.FromLTRB(0, 0, 1, 1));
hRgnTemp[4].CombineRegion(hRgnTemp[0], hRgnTemp[1], CombineRegionMode.Or);
hRgnTemp[5].CombineRegion(hRgnTemp[2], hRgnTemp[3], CombineRegionMode.Or);
hRgnClip.CombineRegion(hRgnTemp[4], hRgnTemp[5], CombineRegionMode.Xor);
for (int i = 0; i < 6; i++)
{
hRgnTemp[i].Dispose();
}
Windows.SetCursor(hCursor);
Windows.ShowCursor(false);
return(0);
case MessageType.Paint:
using (DeviceContext dc = window.BeginPaint())
{
dc.SetViewportOrigin(new Point(cxClient / 2, cyClient / 2));
dc.SelectClippingRegion(hRgnClip);
double fRadius = Hypotenuse(cxClient / 2.0, cyClient / 2.0);
for (double fAngle = 0.0; fAngle < TWO_PI; fAngle += TWO_PI / 360)
{
dc.MoveTo(default);
dc.LineTo(new Point(
(int)(fRadius * Math.Cos(fAngle) + 0.5),
(int)(-fRadius * Math.Sin(fAngle) + 0.5)));
}
}
protected override LResult WindowProcedure(WindowHandle window, MessageType message, WParam wParam, LParam lParam)
{
switch (message)
{
case MessageType.LeftButtonDown:
iCount = 0;
window.Invalidate(true);
return(0);
case MessageType.MouseMove:
// Machines are way to fast to make this look interesting now, adding TakeEvery
if ((MouseKey)wParam == MouseKey.LeftButton && iCount < MAXPOINTS && (sampleCount++ % TakeEvery == 0))
{
Point point = new Point(lParam.LowWord, lParam.HighWord);
pt[iCount++] = point;
using (DeviceContext dc = window.GetDeviceContext())
{
dc.SetPixel(point, default);
}
}
return(0);
case MessageType.LeftButtonUp:
window.Invalidate(false);
return(0);
case MessageType.Paint:
using (DeviceContext dc = window.BeginPaint())
{
Windows.SetCursor(CursorId.Wait);
Windows.ShowCursor(true);
for (int i = 0; i < iCount - 1; i++)
{
for (int j = i + 1; j < iCount; j++)
{
dc.MoveTo(pt[i]);
dc.LineTo(pt[j]);
}
}
Windows.ShowCursor(false);
Windows.SetCursor(CursorId.Arrow);
}
return(0);
}
return(base.WindowProcedure(window, message, wParam, lParam));
}
static LRESULT WindowProcedure(WindowHandle window, WindowMessage message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WindowMessage.Create:
hBrushRed = Windows.CreateSolidBrush(255, 0, 0);
window.SetTimer(ID_TIMER, 1000);
return(0);
case WindowMessage.SettingChange:
f24Hour = Windows.LocaleInfo.GetIs24HourClock();
fSuppress = Windows.LocaleInfo.GetHoursHaveLeadingZeros();
window.Invalidate(true);
return(0);
case WindowMessage.Size:
cxClient = lParam.LowWord;
cyClient = lParam.HighWord;
return(0);
case WindowMessage.Timer:
window.Invalidate(true);
return(0);
case WindowMessage.Paint:
using (DeviceContext dc = window.BeginPaint())
{
dc.SetMapMode(MapMode.Isotropic);
dc.SetWindowExtents(276, 72);
dc.SetViewportExtents(cxClient, cyClient);
dc.SetWindowOrigin(138, 36);
dc.SetViewportOrigin(cxClient / 2, cyClient / 2);
dc.SelectObject(StockPen.Null);
dc.SelectObject(hBrushRed);
DisplayTime(dc, f24Hour, fSuppress);
}
return(0);
case WindowMessage.Destroy:
window.KillTimer(ID_TIMER);
hBrushRed.Dispose();
Windows.PostQuitMessage(0);
return(0);
}
return(Windows.DefaultWindowProcedure(window, message, wParam, lParam));
}
protected override LResult WindowProcedure(WindowHandle window, MessageType message, WParam wParam, LParam lParam)
{
switch (message)
{
case MessageType.Create:
hBrushRed = Gdi.CreateSolidBrush(Color.Red);
window.SetTimer(ID_TIMER, 1000);
return(0);
case MessageType.SettingChange:
f24Hour = Windows.LocaleInfo.GetIs24HourClock();
fSuppress = Windows.LocaleInfo.GetHoursHaveLeadingZeros();
window.Invalidate(true);
return(0);
case MessageType.Size:
cxClient = lParam.LowWord;
cyClient = lParam.HighWord;
return(0);
case MessageType.Timer:
window.Invalidate(true);
return(0);
case MessageType.Paint:
using (DeviceContext dc = window.BeginPaint())
{
dc.SetMappingMode(MappingMode.Isotropic);
dc.SetWindowExtents(new Size(276, 72));
dc.SetViewportExtents(new Size(cxClient, cyClient));
dc.SetWindowOrigin(new Point(138, 36));
dc.SetViewportOrigin(new Point(cxClient / 2, cyClient / 2));
dc.SelectObject(StockPen.Null);
dc.SelectObject(hBrushRed);
DisplayTime(dc, f24Hour, fSuppress);
}
return(0);
case MessageType.Destroy:
window.KillTimer(ID_TIMER);
hBrushRed.Dispose();
break;
}
return(base.WindowProcedure(window, message, wParam, lParam));
}
protected override LResult WindowProcedure(WindowHandle window, MessageType message, WParam wParam, LParam lParam)
{
switch (message)
{
case MessageType.Create:
_initialMonitor = window.MonitorFromWindow();
_screen = Windows.GetMonitorInfo(_initialMonitor).Monitor;
window.SetTimer(_timerId, 200);
return(0);
case MessageType.Size:
_client = new Rectangle(default, new Message.Size(wParam, lParam).NewSize);
return(0);
case MessageType.Timer:
// Update via timer if we aren't primarily on the main monitor
if (window.MonitorFromWindow() != _initialMonitor)
{
window.Invalidate();
}
return(0);
case MessageType.Move:
window.Invalidate();
return(0);
case MessageType.Paint:
using (DeviceContext clientDC = window.BeginPaint())
using (DeviceContext screenDC = Gdi.GetDeviceContext())
{
clientDC.SetStretchBlitMode(StretchMode.HalfTone);
screenDC.StretchBlit(clientDC, _screen, _client, RasterOperation.Common.SourceCopy);
}
return(0);
case MessageType.Destroy:
window.KillTimer(_timerId);
break;
}
return(base.WindowProcedure(window, message, wParam, lParam));
}
static LRESULT WindowProcedure(WindowHandle window, WindowMessage message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WindowMessage.Create:
window.SetTimer(ID_TIMER, 1000);
stPrevious = Windows.GetLocalTime();
return 0;
case WindowMessage.Size:
cxClient = lParam.LowWord;
cyClient = lParam.HighWord;
return 0;
case WindowMessage.Timer:
SYSTEMTIME st = Windows.GetLocalTime();
bool fChange = st.wHour != stPrevious.wHour ||
st.wMinute != stPrevious.wMinute;
using (DeviceContext dc = window.GetDeviceContext())
{
SetIsotropic(dc, cxClient, cyClient);
dc.SelectObject(StockPen.White);
DrawHands(dc, stPrevious, fChange);
dc.SelectObject(StockPen.Black);
DrawHands(dc, st, true);
}
stPrevious = st;
return 0;
case WindowMessage.Paint:
using (DeviceContext dc = window.BeginPaint())
{
SetIsotropic(dc, cxClient, cyClient);
DrawClock(dc);
DrawHands(dc, stPrevious, true);
}
return 0;
case WindowMessage.Destroy:
window.KillTimer(ID_TIMER);
Windows.PostQuitMessage(0);
return 0;
}
return Windows.DefaultWindowProcedure(window, message, wParam, lParam);
}
protected override LResult WindowProcedure(WindowHandle window, MessageType message, WParam wParam, LParam lParam)
{
switch (message)
{
case MessageType.Create:
window.SetTimer(ID_TIMER, 100);
return(0);
case MessageType.Timer:
Point pt = Windows.GetCursorPosition();
using (DeviceContext dc = Gdi.CreateDesktopDeviceContext())
{
cr = dc.GetPixel(pt);
if (cr != crLast)
{
crLast = cr;
window.GetDeviceContext().SetBackgroundColor(cr);
window.Invalidate(erase: false);
}
}
return(0);
case MessageType.Paint:
using (DeviceContext dc = window.BeginPaint())
{
dc.SelectObject(StockFont.SystemFixed);
Rectangle rc = window.GetClientRectangle();
dc.FillRectangle(rc, dc.GetCurrentBrush());
dc.DrawText($"0x{cr.R:X2} 0x{cr.G:X2} 0x{cr.B:X2}".AsSpan(), rc,
TextFormat.SingleLine | TextFormat.Center | TextFormat.VerticallyCenter);
}
return(0);
case MessageType.Destroy:
window.KillTimer(ID_TIMER);
break;
}
return(base.WindowProcedure(window, message, wParam, lParam));
}
static LRESULT WindowProcedure(WindowHandle window, WindowMessage message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WindowMessage.Create:
dcScreen = Windows.CreateDeviceContext("DISPLAY", null);
window.SetTimer(ID_TIMER, 100);
return(0);
case WindowMessage.Timer:
POINT pt = Windows.GetCursorPosition();
cr = dcScreen.GetPixel(pt);
// Not sure why the sample did this
// dcScreen.SetPixel(pt, 0);
if (cr != crLast)
{
crLast = cr;
window.Invalidate(false);
}
return(0);
case WindowMessage.Paint:
using (DeviceContext dc = window.BeginPaint())
{
dc.SelectObject(StockFont.SystemFixed);
RECT rc = window.GetClientRectangle();
dc.DrawText($"0x{cr.R:X2} 0x{cr.G:X2} 0x{cr.B:X2}", rc,
TextFormat.SingleLine | TextFormat.Center | TextFormat.VerticallyCenter);
}
return(0);
case WindowMessage.Destroy:
dcScreen.Dispose();
window.KillTimer(ID_TIMER);
Windows.PostQuitMessage(0);
return(0);
}
return(Windows.DefaultWindowProcedure(window, message, wParam, lParam));
}
static LRESULT WindowProcedure(WindowHandle window, WindowMessage message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WindowMessage.Size:
cxClient = lParam.LowWord;
cyClient = lParam.HighWord;
return(0);
case WindowMessage.Paint:
POINT[] apt = new POINT[10];
using (DeviceContext dc = window.BeginPaint())
{
dc.SelectObject(StockBrush.Gray);
for (int i = 0; i < 10; i++)
{
apt[i].x = cxClient * aptFigure[i].x / 200;
apt[i].y = cyClient * aptFigure[i].y / 100;
}
dc.SetPolyFillMode(PolyFillMode.Alternate);
dc.Polygon(apt);
for (int i = 0; i < 10; i++)
{
apt[i].x += cxClient / 2;
}
dc.SetPolyFillMode(PolyFillMode.Winding);
dc.Polygon(apt);
}
return(0);
case WindowMessage.Destroy:
Windows.PostQuitMessage(0);
return(0);
}
return(Windows.DefaultWindowProcedure(window, message, wParam, lParam));
}
static LRESULT WindowProcedure(WindowHandle window, WindowMessage message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WindowMessage.Create:
MultimediaMethods.PlaySound(PlaySoundAlias.SND_ALIAS_SYSTEMHAND, PlaySoundOptions.SND_ASYNC | PlaySoundOptions.SND_NODEFAULT);
return(0);
case WindowMessage.Paint:
using (DeviceContext dc = window.BeginPaint())
{
RECT rect = window.GetClientRectangle();
dc.DrawText("Hello, Windows 98!", rect, TextFormat.SingleLine | TextFormat.Center | TextFormat.VerticallyCenter);
}
return(0);
case WindowMessage.Destroy:
Windows.PostQuitMessage(0);
return(0);
}
return(Windows.DefaultWindowProcedure(window, message, wParam, lParam));
}
// Overriding the callback method will allow us to provide our own custom behavior
protected override LResult WindowProcedure(WindowHandle window, MessageType message, WParam wParam, LParam lParam)
{
switch (message)
{
// The Paint message is sent when the Window contents need drawn.
case MessageType.Paint:
// Drawing is done in a Device Context by calling BeginPaint(). When the
// DeviceContext is disposed it will call EndPaint().
using (DeviceContext dc = window.BeginPaint())
{
Rectangle client = window.GetClientRectangle();
// The default font is really small on modern PCs, so we'll take the extra step
// to select a font into our device context before drawing the text.
using FontHandle font = Gdi.CreateFont(
height: client.Height / 5,
family: FontFamilyType.Swiss);
dc.SelectObject(font);
// Draw the given text in the middle of the client area of the Window.
dc.DrawText(
"Hello, .NET Core!",
client,
TextFormat.SingleLine | TextFormat.Center | TextFormat.VerticallyCenter);
// Put the system font back as we're going to dispose our font
dc.SelectObject(StockFont.System);
}
// Return 0 to indicate we've handled the message
return(0);
}
// Let the base class handle any other messages
return(base.WindowProcedure(window, message, wParam, lParam));
}
static LRESULT WindowProcedure(WindowHandle window, WindowMessage message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WindowMessage.Create:
using (DeviceContext dc = window.GetDeviceContext())
{
dc.GetTextMetrics(out TEXTMETRIC tm);
cxChar = tm.tmAveCharWidth;
cxCaps = ((tm.tmPitchAndFamily.PitchTypes & FontPitchTypes.VariablePitch) != 0 ? 3 : 2) * cxChar / 2;
cyChar = tm.tmHeight + tm.tmExternalLeading;
}
return(0);
case WindowMessage.Paint:
using (DeviceContext dc = window.BeginPaint())
{
int i = 0;
foreach (SystemMetric metric in SysMets.sysmetrics.Keys)
{
dc.TextOut(0, cyChar * i, metric.ToString());
dc.TextOut(22 * cxCaps, cyChar * i, SysMets.sysmetrics[metric]);
dc.SetTextAlignment(new TextAlignment(TextAlignment.Horizontal.Right, TextAlignment.Vertical.Top));
dc.TextOut(22 * cxCaps + 40 * cxChar, cyChar * i, Windows.GetSystemMetrics(metric).ToString());
dc.SetTextAlignment(new TextAlignment(TextAlignment.Horizontal.Left, TextAlignment.Vertical.Top));
i++;
}
}
return(0);
case WindowMessage.Destroy:
Windows.PostQuitMessage(0);
return(0);
}
return(Windows.DefaultWindowProcedure(window, message, wParam, lParam));
}
protected override LResult WindowProcedure(WindowHandle window, MessageType message, WParam wParam, LParam lParam)
{
switch (message)
{
case MessageType.Size:
cxClient = lParam.LowWord;
cyClient = lParam.HighWord;
return(0);
case MessageType.Paint:
Span <Point> apt = stackalloc Point[10];
using (DeviceContext dc = window.BeginPaint())
{
dc.SelectObject(StockBrush.Gray);
for (int i = 0; i < 10; i++)
{
apt[i].X = cxClient * aptFigure[i].X / 200;
apt[i].Y = cyClient * aptFigure[i].Y / 100;
}
dc.SetPolyFillMode(PolyFillMode.Alternate);
dc.Polygon(apt);
for (int i = 0; i < 10; i++)
{
apt[i].X += cxClient / 2;
}
dc.SetPolyFillMode(PolyFillMode.Winding);
dc.Polygon(apt);
}
return(0);
}
return(base.WindowProcedure(window, message, wParam, lParam));
}
