/// <summary>
/// Sets protection on a block previously allocated with AllocateLarge.
/// </summary>
/// <param name="block">The starting memory address to set protection for.</param>
/// <param name="size">The size of the block.</param>
/// <param name="readAccess">Whether to allow read access.</param>
/// <param name="writeAccess">Whether to allow write access.</param>
/// <remarks>
/// You may not specify false for read access without also specifying false for write access.
/// Note to implementors: This method is not guaranteed to actually set read/write-ability
/// on a block of memory, and may instead be implemented as a no-op after parameter validation.
/// </remarks>
public static void ProtectBlockLarge(IntPtr block, ulong size, bool readAccess, bool writeAccess)
{
uint flOldProtect;
uint flNewProtect;
if (readAccess && writeAccess)
{
flNewProtect = NativeConstants.PAGE_READWRITE;
}
else if (readAccess && !writeAccess)
{
flNewProtect = NativeConstants.PAGE_READONLY;
}
else if (!readAccess && !writeAccess)
{
flNewProtect = NativeConstants.PAGE_NOACCESS;
}
else
{
throw new InvalidOperationException("May not specify a page to be write-only");
}
#if DEBUGSPEW
Tracing.Ping("ProtectBlockLarge: block #" + block.ToString() + ", read: " + readAccess + ", write: " + writeAccess);
#endif
SafeNativeMethods.VirtualProtect(block, new UIntPtr(size), flNewProtect, out flOldProtect);
}
/// <summary>
/// Launches the default browser and opens the given URL.
/// </summary>
/// <param name="url">The URL to show. The maximum length is 512 characters.</param>
/// <remarks>
/// This method will not present an error dialog if the URL could not be launched.
/// Note: This method must only be used by Paint.NET, and not any plugins. It may
/// change or be removed in future versions.
/// </remarks>
public static bool LaunchUrl(IWin32Window owner, string url)
{
if (url.Length > 512)
{
throw new ArgumentOutOfRangeException("url.Length must be <= 512");
}
bool success = false;
string quotedUrl = "\"" + url + "\"";
ExecutePrivilege executePrivilege;
if (!Security.IsAdministrator || (Security.IsAdministrator && !Security.CanLaunchNonAdminProcess))
{
executePrivilege = ExecutePrivilege.AsInvokerOrAsManifest;
}
else
{
executePrivilege = ExecutePrivilege.RequireNonAdminIfPossible;
}
// Method 1. Just launch the url, and hope that the shell figures out the association correctly.
// This method will not work with ExecutePrivilege.RequireNonAdmin though.
if (!success && executePrivilege != ExecutePrivilege.RequireNonAdminIfPossible)
{
try
{
Execute(owner, quotedUrl, null, executePrivilege, ExecuteWaitType.ReturnImmediately);
success = true;
}
catch (Exception ex)
{
Tracing.Ping("Exception while using method 1 to launch url, " + quotedUrl + ", :" + ex.ToString());
success = false;
}
}
// Method 2. Launch the url through explorer
if (!success)
{
const string shellFileLoc = @"%WINDIR%\explorer.exe";
string shellExePath = "(n/a)";
try
{
shellExePath = Environment.ExpandEnvironmentVariables(shellFileLoc);
Execute(owner, shellExePath, quotedUrl, executePrivilege, ExecuteWaitType.ReturnImmediately);
success = true;
}
catch (Exception ex)
{
Tracing.Ping("Exception while using method 2 to launch url through '" + shellExePath + "', " + quotedUrl + ", : " + ex.ToString());
success = false;
}
}
return(success);
}
private void OnItemMouseEnter(object sender, EventArgs e)
{
if (this.managedFocus && !MenuStripEx.IsAnyMenuActive && UI.IsOurAppActive && !IsFocusLocked)
{
Tracing.Ping("stealing focus");
this.Focus();
}
}
protected override void OnMouseLeave(EventArgs e)
{
if (this.managedFocus && !MenuStripEx.IsAnyMenuActive && UI.IsOurAppActive && !IsFocusLocked)
{
Tracing.Ping("relinquishing focus");
OnRelinquishFocus();
}
base.OnMouseLeave(e);
}
/// <summary>
/// Draws several filled rectangles using the same color. If there is an error while trying to draw,
/// it is discarded and ignored.
/// </summary>
/// <param name="g">The Graphics context to draw to.</param>
/// <param name="rects">A list of rectangles to draw.</param>
/// <param name="color">The color to fill the rectangles with.</param>
/// <remarks>
/// Note to implementors: This method is used to avoid drawing with GDI+, which avoids flickering
/// with our transparent toolforms. Implementations may thunk straight to g.FillRectangle().
/// </remarks>
public static void FillRectangles(Graphics g, Color color, Rectangle[] rects)
{
try
{
FillRectanglesImpl(g, color, rects);
}
catch (Exception ex)
{
Tracing.Ping("Exception while executing PdnGraphics.FillRectangles: " + ex.ToString());
}
}
/// <summary>
/// Draws a polygon. The last point is not joined to the beginning point. If there is an error while
/// trying to draw, it is discarded and ignored.
/// </summary>
/// <param name="g">The Graphics context to draw to.</param>
/// <param name="points">The points to draw. Lines are drawn between every point N to point N+1.</param>
/// <param name="color">The color to draw with.</param>
/// <remarks>
/// Note to implementors: This method is used to avoid drawing with GDI+, which avoids flickering
/// with our transparent toolforms. Implementations may thunk straight to g.DrawLines().
/// </remarks>
public static void DrawPolyLine(Graphics g, Color color, Point[] points)
{
try
{
DrawPolyLineImpl(g, color, points);
}
catch (Exception ex)
{
Tracing.Ping("Exception while executing PdnGraphics.DrawPolyLine: " + ex.ToString());
}
}
public PropertyItem2(int id, int len, short type, byte[] value)
{
this.id = id;
this.len = len;
this.type = type;
if (value == null)
{
this.value = new byte[0];
}
else
{
this.value = (byte[])value.Clone();
}
if (len != this.value.Length)
{
Tracing.Ping("len != value.Length: id=" + id + ", type=" + type);
}
}
private static int ExecRequireNonAdmin(IWin32Window parent, string exePath, string args, out IntPtr hProcess)
{
int nError = NativeConstants.ERROR_SUCCESS;
string commandLine = "\"" + exePath + "\"" + (args == null ? "" : (" " + args));
string dir;
try
{
dir = Path.GetDirectoryName(exePath);
}
catch (Exception)
{
dir = null;
}
IntPtr hWndShell = IntPtr.Zero;
IntPtr hShellProcess = IntPtr.Zero;
IntPtr hShellProcessToken = IntPtr.Zero;
IntPtr hTokenCopy = IntPtr.Zero;
IntPtr bstrExePath = IntPtr.Zero;
IntPtr bstrCommandLine = IntPtr.Zero;
IntPtr bstrDir = IntPtr.Zero;
NativeStructs.PROCESS_INFORMATION procInfo = new NativeStructs.PROCESS_INFORMATION();
try
{
hWndShell = SafeNativeMethods.FindWindowW("Progman", null);
if (hWndShell == IntPtr.Zero)
{
NativeMethods.ThrowOnWin32Error("FindWindowW() returned NULL");
}
uint dwPID;
uint dwThreadId = SafeNativeMethods.GetWindowThreadProcessId(hWndShell, out dwPID);
if (0 == dwPID)
{
NativeMethods.ThrowOnWin32Error("GetWindowThreadProcessId returned 0", NativeErrors.ERROR_FILE_NOT_FOUND);
}
hShellProcess = NativeMethods.OpenProcess(NativeConstants.PROCESS_QUERY_INFORMATION, false, dwPID);
if (IntPtr.Zero == hShellProcess)
{
NativeMethods.ThrowOnWin32Error("OpenProcess() returned NULL");
}
bool optResult = NativeMethods.OpenProcessToken(
hShellProcess,
NativeConstants.TOKEN_ASSIGN_PRIMARY | NativeConstants.TOKEN_DUPLICATE | NativeConstants.TOKEN_QUERY,
out hShellProcessToken);
if (!optResult)
{
NativeMethods.ThrowOnWin32Error("OpenProcessToken() returned FALSE");
}
bool dteResult = NativeMethods.DuplicateTokenEx(
hShellProcessToken,
NativeConstants.MAXIMUM_ALLOWED,
IntPtr.Zero,
NativeConstants.SECURITY_IMPERSONATION_LEVEL.SecurityImpersonation,
NativeConstants.TOKEN_TYPE.TokenPrimary,
out hTokenCopy);
if (!dteResult)
{
NativeMethods.ThrowOnWin32Error("DuplicateTokenEx() returned FALSE");
}
bstrExePath = Marshal.StringToBSTR(exePath);
bstrCommandLine = Marshal.StringToBSTR(commandLine);
bstrDir = Marshal.StringToBSTR(dir);
bool cpwtResult = NativeMethods.CreateProcessWithTokenW(
hTokenCopy,
0,
bstrExePath,
bstrCommandLine,
0,
IntPtr.Zero,
bstrDir,
IntPtr.Zero,
out procInfo);
if (cpwtResult)
{
hProcess = procInfo.hProcess;
procInfo.hProcess = IntPtr.Zero;
nError = NativeConstants.ERROR_SUCCESS;
}
else
{
hProcess = IntPtr.Zero;
nError = Marshal.GetLastWin32Error();
}
}
catch (Win32Exception ex)
{
Tracing.Ping(ex.ToString());
nError = ex.ErrorCode;
hProcess = IntPtr.Zero;
}
finally
{
if (bstrExePath != IntPtr.Zero)
{
Marshal.FreeBSTR(bstrExePath);
bstrExePath = IntPtr.Zero;
}
if (bstrCommandLine != IntPtr.Zero)
{
Marshal.FreeBSTR(bstrCommandLine);
bstrCommandLine = IntPtr.Zero;
}
if (bstrDir != IntPtr.Zero)
{
Marshal.FreeBSTR(bstrDir);
bstrDir = IntPtr.Zero;
}
if (hShellProcess != IntPtr.Zero)
{
SafeNativeMethods.CloseHandle(hShellProcess);
hShellProcess = IntPtr.Zero;
}
if (hShellProcessToken != IntPtr.Zero)
{
SafeNativeMethods.CloseHandle(hShellProcessToken);
hShellProcessToken = IntPtr.Zero;
}
if (hTokenCopy != IntPtr.Zero)
{
SafeNativeMethods.CloseHandle(hTokenCopy);
hTokenCopy = IntPtr.Zero;
}
if (procInfo.hThread != IntPtr.Zero)
{
SafeNativeMethods.CloseHandle(procInfo.hThread);
procInfo.hThread = IntPtr.Zero;
}
if (procInfo.hProcess != IntPtr.Zero)
{
SafeNativeMethods.CloseHandle(procInfo.hProcess);
procInfo.hProcess = IntPtr.Zero;
}
}
return(nError);
}
