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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
namespace Tango.ScreenCapture
{
public static class CursorUtils
{
#region INTERNALS
internal static class User32
{
public const Int32 CURSOR_SHOWING = 0x00000001;
[StructLayout(LayoutKind.Sequential)]
public struct ICONINFO
{
public bool fIcon;
public Int32 xHotspot;
public Int32 yHotspot;
public IntPtr hbmMask;
public IntPtr hbmColor;
}
[StructLayout(LayoutKind.Sequential)]
public struct POINT
{
public Int32 x;
public Int32 y;
}
[StructLayout(LayoutKind.Sequential)]
public struct CURSORINFO
{
public Int32 cbSize;
public Int32 flags;
public IntPtr hCursor;
public POINT ptScreenPos;
}
[DllImport("user32.dll")]
public static extern bool GetCursorInfo(out CURSORINFO pci);
[DllImport("user32.dll")]
public static extern IntPtr CopyIcon(IntPtr hIcon);
[DllImport("user32.dll", SetLastError = true)]
public static extern bool DestroyIcon(IntPtr hIcon);
[DllImport("user32.dll", SetLastError = true)]
public static extern bool DrawIconEx(IntPtr hdc, int xLeft, int yTop, IntPtr hIcon, int cxWidth, int cyHeight, int istepIfAniCur, IntPtr hbrFlickerFreeDraw, int diFlags);
[DllImport("user32.dll")]
public static extern bool DrawIcon(IntPtr hdc, int x, int y, IntPtr hIcon);
[DllImport("user32.dll")]
public static extern bool GetIconInfo(IntPtr hIcon, out ICONINFO piconinfo);
}
#endregion
#region Internal Classes
[StructLayout(LayoutKind.Sequential)]
struct CURSORINFO
{
public Int32 cbSize;
public Int32 flags;
public IntPtr hCursor;
public POINTAPI ptScreenPos;
}
[StructLayout(LayoutKind.Sequential)]
struct POINTAPI
{
public int x;
public int y;
}
[DllImport("user32.dll")]
static extern bool GetCursorInfo(out CURSORINFO pci);
[DllImport("user32.dll")]
static extern bool DrawIcon(IntPtr hDC, int X, int Y, IntPtr hIcon);
const Int32 CURSOR_SHOWING = 0x00000001;
internal struct SIZE
{
public int cx;
public int cy;
}
internal class GDIStuff
{
#region Class Variables
public const int SRCCOPY = 13369376;
#endregion
#region Class Functions
[DllImport("gdi32.dll", EntryPoint = "CreateDC")]
public static extern IntPtr CreateDC(IntPtr lpszDriver, string lpszDevice, IntPtr lpszOutput, IntPtr lpInitData);
[DllImport("gdi32.dll", EntryPoint = "DeleteDC")]
public static extern IntPtr DeleteDC(IntPtr hDc);
[DllImport("gdi32.dll", EntryPoint = "DeleteObject")]
public static extern IntPtr DeleteObject(IntPtr hDc);
[DllImport("gdi32.dll", EntryPoint = "BitBlt")]
public static extern bool BitBlt(IntPtr hdcDest, int xDest,
int yDest, int wDest,
int hDest, IntPtr hdcSource,
int xSrc, int ySrc, int RasterOp);
[DllImport("gdi32.dll", EntryPoint = "CreateCompatibleBitmap")]
public static extern IntPtr CreateCompatibleBitmap
(IntPtr hdc, int nWidth, int nHeight);
[DllImport("gdi32.dll", EntryPoint = "CreateCompatibleDC")]
public static extern IntPtr CreateCompatibleDC(IntPtr hdc);
[DllImport("gdi32.dll", EntryPoint = "SelectObject")]
public static extern IntPtr SelectObject(IntPtr hdc, IntPtr bmp);
#endregion
}
internal class Win32Stuff
{
#region Class Variables
public const int SM_CXSCREEN = 0;
public const int SM_CYSCREEN = 1;
public const Int32 CURSOR_SHOWING = 0x00000001;
[StructLayout(LayoutKind.Sequential)]
public struct ICONINFO
{
public bool fIcon; // Specifies whether this structure defines an icon or a cursor. A value of TRUE specifies
public Int32 xHotspot; // Specifies the x-coordinate of a cursor's hot spot. If this structure defines an icon, the hot
public Int32 yHotspot; // Specifies the y-coordinate of the cursor's hot spot. If this structure defines an icon, the hot
public IntPtr hbmMask; // (HBITMAP) Specifies the icon bitmask bitmap. If this structure defines a black and white icon,
public IntPtr hbmColor; // (HBITMAP) Handle to the icon color bitmap. This member can be optional if this
}
[StructLayout(LayoutKind.Sequential)]
public struct POINT
{
public Int32 x;
public Int32 y;
}
[StructLayout(LayoutKind.Sequential)]
public struct CURSORINFO
{
public Int32 cbSize; // Specifies the size, in bytes, of the structure.
public Int32 flags; // Specifies the cursor state. This parameter can be one of the following values:
public IntPtr hCursor; // Handle to the cursor.
public POINT ptScreenPos; // A POINT structure that receives the screen coordinates of the cursor.
}
#endregion
#region Class Functions
[DllImport("user32.dll", EntryPoint = "GetDesktopWindow")]
public static extern IntPtr GetDesktopWindow();
[DllImport("user32.dll", EntryPoint = "GetDC")]
public static extern IntPtr GetDC(IntPtr ptr);
[DllImport("user32.dll", EntryPoint = "GetSystemMetrics")]
public static extern int GetSystemMetrics(int abc);
[DllImport("user32.dll", EntryPoint = "GetWindowDC")]
public static extern IntPtr GetWindowDC(Int32 ptr);
[DllImport("user32.dll", EntryPoint = "ReleaseDC")]
public static extern IntPtr ReleaseDC(IntPtr hWnd, IntPtr hDc);
[DllImport("user32.dll", EntryPoint = "GetCursorInfo")]
public static extern bool GetCursorInfo(out CURSORINFO pci);
[DllImport("user32.dll", EntryPoint = "CopyIcon")]
public static extern IntPtr CopyIcon(IntPtr hIcon);
[DllImport("user32.dll", SetLastError = true)]
static extern bool DestroyIcon(IntPtr hIcon);
[DllImport("user32.dll", EntryPoint = "GetIconInfo")]
public static extern bool GetIconInfo(IntPtr hIcon, out ICONINFO piconinfo);
#endregion
}
#endregion
[DebuggerHidden]
[DebuggerStepThrough]
public static void ApplyCursor(System.Drawing.Graphics g, System.Drawing.Bitmap bitmap, int left, int top)
{
try
{
CURSORINFO pci;
pci.cbSize = Marshal.SizeOf(typeof(CURSORINFO));
if (GetCursorInfo(out pci))
{
if (pci.flags == CURSOR_SHOWING)
{
//var iconPointer = User32.CopyIcon(pci.hCursor);
//User32.ICONINFO iconInfo;
//User32.GetIconInfo(iconPointer, out iconInfo);
var hdc = g.GetHdc();
User32.DrawIconEx(hdc, pci.ptScreenPos.x - left, pci.ptScreenPos.y - top, pci.hCursor, 0, 0, 0, IntPtr.Zero, 0x0003);
//User32.DestroyIcon(iconPointer);
GDIStuff.DeleteObject(pci.hCursor);
}
}
g.ReleaseHdc();
}
catch { }
}
}
}
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