// This function computes everything in terms of physical size (millimeters), not pixels
//
private void ComputeLayout()
{
Debug.Assert(pageInfo != null, "Must call ComputePreview first");
layoutOk = true;
if (pageInfo.Length == 0)
{
ClientSize = Size;
return;
}
Graphics tempGraphics = CreateGraphicsInternal();
IntPtr dc = tempGraphics.GetHdc();
screendpi = new Point(UnsafeNativeMethods.GetDeviceCaps(new HandleRef(tempGraphics, dc), NativeMethods.LOGPIXELSX),
UnsafeNativeMethods.GetDeviceCaps(new HandleRef(tempGraphics, dc), NativeMethods.LOGPIXELSY));
tempGraphics.ReleaseHdcInternal(dc);
tempGraphics.Dispose();
Size pageSize = pageInfo[StartPage].PhysicalSize;
Size controlPhysicalSize = new Size(PixelsToPhysical(new Point(Size), screendpi));
if (autoZoom)
{
double zoomX = ((double)controlPhysicalSize.Width - border * (columns + 1)) / (columns * pageSize.Width);
double zoomY = ((double)controlPhysicalSize.Height - border * (rows + 1)) / (rows * pageSize.Height);
zoom = Math.Min(zoomX, zoomY);
}
imageSize = new Size((int)(zoom * pageSize.Width), (int)(zoom * pageSize.Height));
int virtualX = (imageSize.Width * columns) + border * (columns + 1);
int virtualY = (imageSize.Height * rows) + border * (rows + 1);
SetVirtualSizeNoInvalidate(new Size(PhysicalToPixels(new Point(virtualX, virtualY), screendpi)));
}
private static void Initialize()
{
if (s_isInitialized)
{
return;
}
try
{
string value = ConfigurationManager.AppSettings.Get(EnableHighDpiConfigurationValueName);
if (string.Equals(value, "true", StringComparison.InvariantCultureIgnoreCase))
{
s_enableHighDpi = true;
}
}
catch
{
}
if (s_enableHighDpi)
{
IntPtr hDC = UnsafeNativeMethods.GetDC(NativeMethods.NullHandleRef);
if (hDC != IntPtr.Zero)
{
s_deviceDpiX = UnsafeNativeMethods.GetDeviceCaps(new HandleRef(null, hDC), SafeNativeMethods.LOGPIXELSX);
s_deviceDpiY = UnsafeNativeMethods.GetDeviceCaps(new HandleRef(null, hDC), SafeNativeMethods.LOGPIXELSY);
UnsafeNativeMethods.ReleaseDC(NativeMethods.NullHandleRef, new HandleRef(null, hDC));
}
}
s_isInitialized = true;
}
private static void Initialize()
{
if (isInitialized)
{
return;
}
if (IsDpiAwarenessValueSet())
{
enableHighDpi = true;
}
else
{
try
{
// For legacy users who define this constant in app settings. But we read it only when we do not see a valid dpiawareness value in the Microsoft section
string value = ConfigurationManager.AppSettings.Get(ConfigurationStringConstants.EnableWindowsFormsHighDpiAutoResizingKeyName);
if (!string.IsNullOrEmpty(value) && string.Equals(value, "true", StringComparison.InvariantCultureIgnoreCase))
{
enableHighDpi = true;
}
}
catch
{
}
}
if (enableHighDpi)
{
#if Microsoft_NAMESPACE
try
{
if (!DpiHelper.SetWinformsApplicationDpiAwareness())
{
System.Diagnostics.Debug.WriteLine("Failed to set Application DPI awareness");
}
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("Failed to set Application DPI awareness " + ex.ToString());
}
#endif
IntPtr hDC = UnsafeNativeMethods.GetDC(NativeMethods.NullHandleRef);
if (hDC != IntPtr.Zero)
{
deviceDpi = UnsafeNativeMethods.GetDeviceCaps(new HandleRef(null, hDC), CAPS.LOGPIXELSX);
UnsafeNativeMethods.ReleaseDC(NativeMethods.NullHandleRef, new HandleRef(null, hDC));
}
}
isInitialized = true;
}
internal Screen(IntPtr monitor, IntPtr hdc)
{
IntPtr screenDC = hdc;
if (!multiMonitorSupport || monitor == (IntPtr)PRIMARY_MONITOR)
{
// Single monitor system
//
bounds = SystemInformation.VirtualScreen;
workingArea = SystemInformation.WorkingArea;
primary = true;
deviceName = "DISPLAY";
}
else
{
// MultiMonitor System
// We call the 'A' version of GetMonitorInfoA() because
// the 'W' version just never fills out the struct properly on Win2K.
//
NativeMethods.MONITORINFOEX info = new NativeMethods.MONITORINFOEX();
SafeNativeMethods.GetMonitorInfo(new HandleRef(null, monitor), info);
bounds = Rectangle.FromLTRB(info.rcMonitor.left, info.rcMonitor.top, info.rcMonitor.right, info.rcMonitor.bottom);
workingArea = Rectangle.FromLTRB(info.rcWork.left, info.rcWork.top, info.rcWork.right, info.rcWork.bottom);
primary = ((info.dwFlags & MONITORINFOF_PRIMARY) != 0);
int count = info.szDevice.Length;
while (count > 0 && info.szDevice[count - 1] == (char)0)
{
count--;
}
deviceName = new string(info.szDevice);
deviceName = deviceName.TrimEnd((char)0);
if (hdc == IntPtr.Zero)
{
screenDC = UnsafeNativeMethods.CreateDC(deviceName);
}
}
hmonitor = monitor;
this.bitDepth = UnsafeNativeMethods.GetDeviceCaps(new HandleRef(null, screenDC), NativeMethods.BITSPIXEL);
this.bitDepth *= UnsafeNativeMethods.GetDeviceCaps(new HandleRef(null, screenDC), NativeMethods.PLANES);
if (hdc != screenDC)
{
UnsafeNativeMethods.DeleteDC(new HandleRef(null, screenDC));
}
}
private static void Initialize()
{
if (isInitialized)
{
return;
}
IntPtr hDC = UnsafeNativeMethods.GetDC(CAPS.NullHandleRef);
if (hDC != IntPtr.Zero)
{
deviceDpi = UnsafeNativeMethods.GetDeviceCaps(new HandleRef(null, hDC), CAPS.LOGPIXELSX);
UnsafeNativeMethods.ReleaseDC(CAPS.NullHandleRef, new HandleRef(null, hDC));
}
isInitialized = true;
}
private static void Initialize()
{
if (s_isInitialized)
{
return;
}
IntPtr hDC = UnsafeNativeMethods.GetDC(NativeMethods.NullHandleRef);
if (hDC != IntPtr.Zero)
{
s_deviceDpiX = UnsafeNativeMethods.GetDeviceCaps(new HandleRef(null, hDC), SafeNativeMethods.LOGPIXELSX);
s_deviceDpiY = UnsafeNativeMethods.GetDeviceCaps(new HandleRef(null, hDC), SafeNativeMethods.LOGPIXELSY);
UnsafeNativeMethods.ReleaseDC(NativeMethods.NullHandleRef, new HandleRef(null, hDC));
}
s_isInitialized = true;
}
private static void Initialize()
{
if (isInitialized)
{
return;
}
if (IsDpiAwarenessValueSet())
{
enableHighDpi = true;
}
else
{
try
{
string text = ConfigurationManager.AppSettings.Get("EnableWindowsFormsHighDpiAutoResizing");
if (!string.IsNullOrEmpty(text) && string.Equals(text, "true", StringComparison.InvariantCultureIgnoreCase))
{
enableHighDpi = true;
}
}
catch
{
}
}
if (enableHighDpi)
{
try
{
SetWinformsApplicationDpiAwareness();
}
catch (Exception)
{
}
IntPtr dC = UnsafeNativeMethods.GetDC(NativeMethods.NullHandleRef);
if (dC != IntPtr.Zero)
{
deviceDpi = UnsafeNativeMethods.GetDeviceCaps(new HandleRef(null, dC), 88);
UnsafeNativeMethods.ReleaseDC(NativeMethods.NullHandleRef, new HandleRef(null, dC));
}
}
isInitialized = true;
}
internal Screen(IntPtr monitor, IntPtr hdc)
{
IntPtr screenDC = hdc;
if (!multiMonitorSupport || monitor == (IntPtr)PRIMARY_MONITOR)
{
// Single monitor system
//
bounds = SystemInformation.VirtualScreen;
primary = true;
deviceName = "DISPLAY";
}
else
{
// Multiple monitor system
var info = new NativeMethods.MONITORINFOEX();
SafeNativeMethods.GetMonitorInfo(new HandleRef(null, monitor), info);
bounds = Rectangle.FromLTRB(info.rcMonitor.left, info.rcMonitor.top, info.rcMonitor.right, info.rcMonitor.bottom);
primary = ((info.dwFlags & MONITORINFOF_PRIMARY) != 0);
deviceName = new string(info.szDevice);
deviceName = deviceName.TrimEnd((char)0);
if (hdc == IntPtr.Zero)
{
screenDC = UnsafeNativeMethods.CreateDC(deviceName);
}
}
hmonitor = monitor;
this.bitDepth = UnsafeNativeMethods.GetDeviceCaps(new HandleRef(null, screenDC), NativeMethods.BITSPIXEL);
this.bitDepth *= UnsafeNativeMethods.GetDeviceCaps(new HandleRef(null, screenDC), NativeMethods.PLANES);
if (hdc != screenDC)
{
UnsafeNativeMethods.DeleteDC(new HandleRef(null, screenDC));
}
}
private static void Initialize()
{
if (isInitialized)
{
return;
}
if (Environment.OSVersion.Platform != System.PlatformID.Win32NT)
{
deviceDpi = 96; // Default $$$$
}
else
{
IntPtr hDC = UnsafeNativeMethods.GetDC(NativeMethods.NullHandleRef);
if (hDC != IntPtr.Zero)
{
deviceDpi = UnsafeNativeMethods.GetDeviceCaps(new HandleRef(null, hDC), CAPS.LOGPIXELSX);
UnsafeNativeMethods.ReleaseDC(NativeMethods.NullHandleRef, new HandleRef(null, hDC));
}
}
isInitialized = true;
}
private static void Initialize()
{
if (s_isInitialized)
{
return;
}
// NOTE: In the .NET Framework, this value can be controlled via ConfigurationManager.
// In .NET Core, the value always defaults to the value "true".
if (s_enableHighDpi)
{
IntPtr hDC = UnsafeNativeMethods.GetDC(NativeMethods.NullHandleRef);
if (hDC != IntPtr.Zero)
{
s_deviceDpiX = UnsafeNativeMethods.GetDeviceCaps(new HandleRef(null, hDC), SafeNativeMethods.LOGPIXELSX);
s_deviceDpiY = UnsafeNativeMethods.GetDeviceCaps(new HandleRef(null, hDC), SafeNativeMethods.LOGPIXELSY);
UnsafeNativeMethods.ReleaseDC(NativeMethods.NullHandleRef, new HandleRef(null, hDC));
}
}
s_isInitialized = true;
}
