如何覆盖最大32×32大小的鼠标在Windows这样的程序可以 [英] How to override maximum 32x32 mouse size in Windows like this program can
问题描述
我想我的程序能够覆盖的32×32的最大施加鼠标大小很像在附加了图像的程序的那样，图示光标72x72不等＃。这是从将procmon 捕获显示是怎么回事时，光标改变。
I'd like for my program to be able to override the maximum imposed mouse size of 32x32 much like the program in the picture attached does, the cursor pictured is 72x72. This is a capture from ProcMon showing what's going on when the cursors change.
不过，如果我尝试光标文件自己更改注册表值，然后使用推送更改
However, if I try to change the registry values for the cursor files myself and then push the changes using
SystemParametersInfo（SPI.SPI_SETCURSORS，0，IntPtr.Zero，SPIF.SPIF_SENDCHANGE）;
然后光标会改变，但它仍然局限在32×32最大尺寸。这怎么方案能够得到解决这个限制？此外，光标保持程序结束后，因此它不可能是东西它做的同时运行，但必须某处重写的设置
then the cursor will change, but it's still limited to the 32x32 maximum size. How was this program able to get around that restriction? Also, the cursors remain after the program ends, so it can't be something it's doing while running, but must override a setting somewhere.
感谢您的帮助，我一直没能找到在网络上像这样的东西，所以我甚至不知道是否有人将有答案。
Thanks for your help, I haven't been able to find ANYTHING like this on the net, so I don't even know if anyone will have the answer.
编辑：我看到一些访问一个名为 C文件：\\ WINDOWS \\ Syswow64资料\\ Imageres.dll 。他们只读取，但也许这些游标存放在这里，或者他们以某种方式修改此文件。但我想它可能会有人比我在正确的轨道上更多的经验了。
I see some access to a file called C:\Windows\SysWOW64\Imageres.dll. They're only reads, but maybe these cursors are stored in here, or they modified this file somehow. But I figured it might get someone with more experience than myself off on the right track.
编辑2：我认为大小是由SM_CXCURSOR和SM_CYCURSOR变量决定。如果我能找到一种方法来设置这些，我可能会在企业。打算写一快的节目让我这些值与程序运行和巨大的鼠标光标在PC上，看看它返回...
EDIT 2: I believe the sizes are dictated by the SM_CXCURSOR and SM_CYCURSOR variables. If I could find a way to set these, I might be in business. Going to write a quick program to get me those values on the PC with the program running and huge mouse cursor and see what it returns...
编辑3：没有运气;与巨大的光标PC返回32x32的为它的SM_CXCURSOR和SM_CYCURSOR。
EDIT 3: No luck; the PC with the huge cursor returns 32x32 for it's SM_CXCURSOR and SM_CYCURSOR.
推荐答案
使用 SetSystemCursor 有可能光标设置为更大的尺寸比标准光标图像
Using SetSystemCursor it is possible to set a cursor to an image of much larger size than the standard cursor.
下面是一类我有调整系统光标：
Here is a class I have for resizing the system cursors:
using System;
using System.Drawing;
using System.Reflection;
using System.Runtime.InteropServices;
namespace WindowsFormsApplication1
{
class SystemCursors
{
[DllImport("user32.dll")]
static extern bool SetSystemCursor(IntPtr hcur, uint id);
enum CursorShift
{
Centered,
LowerRight,
}
public static void SetSystemCursorsSize(int newSize)
{
ResizeCursor(System.Windows.Forms.Cursors.AppStarting, newSize, CursorShift.LowerRight);
ResizeCursor(System.Windows.Forms.Cursors.Arrow, newSize, CursorShift.LowerRight);
ResizeCursor(System.Windows.Forms.Cursors.Cross, newSize, CursorShift.Centered);
ResizeCursor(System.Windows.Forms.Cursors.Hand, newSize, CursorShift.LowerRight);
ResizeCursor(System.Windows.Forms.Cursors.Help, newSize, CursorShift.LowerRight);
ResizeCursor(System.Windows.Forms.Cursors.HSplit, newSize, CursorShift.Centered);
ResizeCursor(System.Windows.Forms.Cursors.IBeam, newSize, CursorShift.Centered);
ResizeCursor(System.Windows.Forms.Cursors.No, newSize, CursorShift.LowerRight);
ResizeCursor(System.Windows.Forms.Cursors.NoMove2D, newSize, CursorShift.LowerRight);
ResizeCursor(System.Windows.Forms.Cursors.NoMoveHoriz, newSize, CursorShift.LowerRight);
ResizeCursor(System.Windows.Forms.Cursors.NoMoveVert, newSize, CursorShift.LowerRight);
ResizeCursor(System.Windows.Forms.Cursors.PanEast, newSize, CursorShift.Centered);
ResizeCursor(System.Windows.Forms.Cursors.PanNE, newSize, CursorShift.Centered);
ResizeCursor(System.Windows.Forms.Cursors.PanNorth, newSize, CursorShift.Centered);
ResizeCursor(System.Windows.Forms.Cursors.PanNW, newSize, CursorShift.Centered);
ResizeCursor(System.Windows.Forms.Cursors.PanSE, newSize, CursorShift.Centered);
ResizeCursor(System.Windows.Forms.Cursors.PanSouth, newSize, CursorShift.Centered);
ResizeCursor(System.Windows.Forms.Cursors.PanSW, newSize, CursorShift.Centered);
ResizeCursor(System.Windows.Forms.Cursors.PanWest, newSize, CursorShift.Centered);
ResizeCursor(System.Windows.Forms.Cursors.SizeAll, newSize, CursorShift.Centered);
ResizeCursor(System.Windows.Forms.Cursors.SizeNESW, newSize, CursorShift.Centered);
ResizeCursor(System.Windows.Forms.Cursors.SizeNS, newSize, CursorShift.Centered);
ResizeCursor(System.Windows.Forms.Cursors.SizeNWSE, newSize, CursorShift.Centered);
ResizeCursor(System.Windows.Forms.Cursors.SizeWE, newSize, CursorShift.Centered);
ResizeCursor(System.Windows.Forms.Cursors.UpArrow, newSize, CursorShift.Centered);
ResizeCursor(System.Windows.Forms.Cursors.VSplit, newSize, CursorShift.Centered);
ResizeCursor(System.Windows.Forms.Cursors.WaitCursor, newSize, CursorShift.LowerRight);
}
private static void ResizeCursor(System.Windows.Forms.Cursor cursor,
int newSize, CursorShift cursorShift)
{
Bitmap cursorImage = GetSystemCursorBitmap(cursor);
cursorImage = ResizeCursorBitmap(cursorImage, new Size(newSize, newSize), cursorShift);
SetCursor(cursorImage, getResourceId(cursor));
}
public static Bitmap GetSystemCursorBitmap(System.Windows.Forms.Cursor cursor)
{
Bitmap bitmap = new Bitmap(
cursor.Size.Width, cursor.Size.Height,
System.Drawing.Imaging.PixelFormat.Format32bppArgb);
Graphics graphics = Graphics.FromImage(bitmap);
cursor.Draw(graphics,
new Rectangle(new Point(0, 0), cursor.Size));
bitmap = Crop(bitmap);
return bitmap;
}
private static Bitmap Crop(Bitmap bmp)
{
//code from http://stackoverflow.com/a/10392379/935052
int w = bmp.Width;
int h = bmp.Height;
Func<int, bool> allWhiteRow = row =>
{
for (int i = 0; i < w; ++i)
if (bmp.GetPixel(i, row).A != 0)
return false;
return true;
};
Func<int, bool> allWhiteColumn = col =>
{
for (int i = 0; i < h; ++i)
if (bmp.GetPixel(col, i).A != 0)
return false;
return true;
};
int topmost = 0;
for (int row = 0; row < h; ++row)
{
if (allWhiteRow(row))
topmost = row;
else break;
}
int bottommost = 0;
for (int row = h - 1; row >= 0; --row)
{
if (allWhiteRow(row))
bottommost = row;
else break;
}
int leftmost = 0, rightmost = 0;
for (int col = 0; col < w; ++col)
{
if (allWhiteColumn(col))
leftmost = col;
else
break;
}
for (int col = w - 1; col >= 0; --col)
{
if (allWhiteColumn(col))
rightmost = col;
else
break;
}
if (rightmost == 0) rightmost = w; // As reached left
if (bottommost == 0) bottommost = h; // As reached top.
int croppedWidth = rightmost - leftmost;
int croppedHeight = bottommost - topmost;
if (croppedWidth == 0) // No border on left or right
{
leftmost = 0;
croppedWidth = w;
}
if (croppedHeight == 0) // No border on top or bottom
{
topmost = 0;
croppedHeight = h;
}
try
{
var target = new Bitmap(croppedWidth, croppedHeight);
using (Graphics g = Graphics.FromImage(target))
{
g.DrawImage(bmp,
new RectangleF(0, 0, croppedWidth, croppedHeight),
new RectangleF(leftmost, topmost, croppedWidth, croppedHeight),
GraphicsUnit.Pixel);
}
return target;
}
catch (Exception ex)
{
throw new Exception(
string.Format("Values are topmost={0} btm={1} left={2} right={3} croppedWidth={4} croppedHeight={5}", topmost, bottommost, leftmost, rightmost, croppedWidth, croppedHeight),
ex);
}
}
private static Bitmap ResizeCursorBitmap(Bitmap bitmap, Size size, CursorShift cursorShift)
{
if (size.Width > 32)
{
//shifting must occur
Bitmap intermediateBitmap = new Bitmap(64, 64);
Graphics intermediateGraphics = Graphics.FromImage(intermediateBitmap);
if (cursorShift == CursorShift.LowerRight)
//place the mouse cursor in the lower right hand quadrant of the bitmap
intermediateGraphics.DrawImage(bitmap,
intermediateBitmap.Width / 2, intermediateBitmap.Height / 2);
else if (cursorShift == CursorShift.Centered)
intermediateGraphics.DrawImage(bitmap,
intermediateBitmap.Width / 2 - bitmap.Width / 2,
intermediateBitmap.Height / 2 - bitmap.Height / 2);
//now we have a shifted bitmap; use it to draw the resized cursor
//Bitmap finalBitmap = new Bitmap(intermediateBitmap, size); //normal quality
Bitmap finalBitmap = new Bitmap(size.Width, size.Height);
Graphics finalGraphics = Graphics.FromImage(finalBitmap);
finalGraphics.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
finalGraphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
finalGraphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
finalGraphics.DrawImage(intermediateBitmap, 0, 0, finalBitmap.Width, finalBitmap.Height);
return finalBitmap;
}
else
{
Bitmap newBitmap = new Bitmap(bitmap, size);
return newBitmap;
}
}
private static uint getResourceId(System.Windows.Forms.Cursor cursor)
{
FieldInfo fi = typeof(System.Windows.Forms.Cursor).GetField(
"resourceId", BindingFlags.NonPublic | BindingFlags.Instance);
object obj = fi.GetValue(cursor);
return Convert.ToUInt32((int)obj);
}
private static void SetCursor(Bitmap bitmap, uint whichCursor)
{
IntPtr ptr = bitmap.GetHicon();
bool retval = SetSystemCursor(ptr, whichCursor);
}
}
}
它的工作原理获取当前的系统光标在 System.Windows.Forms.Cursors 规定，并从它制作的图像与 Cursor.Draw 。然后该图像被调整大小到所需的大小。这就要求移动光标图像，无论对右下角（像箭头指针）或中心光标图像的放大图像内（如跨和IBEAM）。
It works by getting the current system cursor as provided in System.Windows.Forms.Cursors and making an image from it with Cursor.Draw. The image is then resized to the desired size. This requires shifting the cursor image, either to the lower right hand corner (like for arrow pointers) or centering the cursor image inside the larger image (like for Cross and IBeam).
如果需要的话，绕过所有的大小调整code您可以使用自己的图像光标。只需提供该位图的setCursor 。
You can use your own image for the cursor if desired, bypassing all the resizing code. Just supply the Bitmap to SetCursor.
一旦新的光标图像准备就绪，所需数据的最后一块就是我们试图取代光标的ID。每个 System.Windows.Forms.Cursor 包含此信息，但在一个私有变量，因此反射来获取值。如果preFER以避免反光，你可以建立这些值的表来代替。请参见 MSDN SetSystemCursor 获得值的列表
Once the new cursor image is ready, the last piece of data needed is the ID of the cursor we are trying to replace. Each System.Windows.Forms.Cursor does contain this information, but in a private variable, so reflection is used to get the value. If you prefer to avoid reflection, you could build a table of these values instead. See MSDN SetSystemCursor for a list of values.
要使用的类就叫
SystemCursors.SetSystemCursorsSize(128);
这篇关于如何覆盖最大32×32大小的鼠标在Windows这样的程序可以的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
