C# 从图像创建半透明光标
是否可以从图像创建一个半透明的光标 我目前正在拍摄一张自定义图像,并对鼠标光标图像进行叠加。如果我能把它做成半透明的,那就太好了,但不是必须的。销售人员喜欢闪亮 目前正在做类似的事情:C# 从图像创建半透明光标,c#,winforms,cursor,transparency,C#,Winforms,Cursor,Transparency,是否可以从图像创建一个半透明的光标 我目前正在拍摄一张自定义图像,并对鼠标光标图像进行叠加。如果我能把它做成半透明的,那就太好了,但不是必须的。销售人员喜欢闪亮 目前正在做类似的事情: Image cursorImage = customImage.GetThumbnailImage(300, 100, null, IntPtr.Zero); cursorImage.SetResolution(96.0F, 96.0F); int midPointX = cursorImage.Width /
Image cursorImage = customImage.GetThumbnailImage(300, 100, null, IntPtr.Zero);
cursorImage.SetResolution(96.0F, 96.0F);
int midPointX = cursorImage.Width / 2;
int midPointY = cursorImage.Height / 2;
Bitmap cursorMouse = GetCursorImage(cursorOverlay);
Graphics cursorGfx = Graphics.FromImage(cursorImageCopy);
cursorGfx.DrawImageUnscaled(cursorMouse, midPointX, midPointY);
Cursor tmp = new Cursor(cursorImage.GetHicon());
在我的头顶上(我会先试试):
如果性能允许,您可以扫描完全透明的像素并将其设置为零 我试过下面的例子,效果很好
public struct IconInfo
{
public bool fIcon;
public int xHotspot;
public int yHotspot;
public IntPtr hbmMask;
public IntPtr hbmColor;
}
[DllImport("user32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool GetIconInfo(IntPtr hIcon, ref IconInfo pIconInfo);
[DllImport("user32.dll")]
public static extern IntPtr CreateIconIndirect(ref IconInfo icon);
public static Cursor CreateCursor(Bitmap bmp, int xHotSpot, int yHotSpot)
{
IntPtr ptr = bmp.GetHicon();
IconInfo tmp = new IconInfo();
GetIconInfo(ptr, ref tmp);
tmp.xHotspot = xHotSpot;
tmp.yHotspot = yHotSpot;
tmp.fIcon = false;
ptr = CreateIconIndirect(ref tmp);
return new Cursor(ptr);
}
我已经把这个放在了按钮点击事件上(你可以在你喜欢的地方打电话):
并且Up.png图像以75%的不透明度保存在AdobePhotoshop中。这非常简单,我不使用API 代码是
Bitmap img = new Bitmap(new Bitmap(@"image.png"), 30, 30); //this is the size of cursor
Icon icono = Icon.FromHandle(img.GetHicon()); //create the Icon object
Cursor = new Cursor(icono.Handle); //the icon Object has the stream to create a Cursor.
我希望这是您的解决方案如果您想“动态”设置自定义鼠标光标位图的透明度,您可能会发现此功能很有用。它使用颜色矩阵设置任何给定位图的透明度,并返回修改后的位图。要想稍微增加透明度,transfactor应该介于225和245之间,请尝试一下。(需要导入System.Drawing和System.Drawing.Imaging) { }
Bitmap img = new Bitmap(new Bitmap(@"image.png"), 30, 30); //this is the size of cursor
Icon icono = Icon.FromHandle(img.GetHicon()); //create the Icon object
Cursor = new Cursor(icono.Handle); //the icon Object has the stream to create a Cursor.
public static Bitmap GetBMPTransparent(Bitmap bmp, int TranspFactor)
Bitmap transpBmp = new Bitmap(bmp.Width, bmp.Height);
using (ImageAttributes attr = new ImageAttributes()) {
ColorMatrix matrix = new ColorMatrix { Matrix33 = Convert.ToSingle(TranspFactor / 255) };
attr.SetColorMatrix(matrix);
using (Graphics g = Graphics.FromImage(transpBmp)) {
g.DrawImage(bmp, new Rectangle(0, 0, bmp.Width, bmp.Height), 0, 0, bmp.Width, bmp.Height, GraphicsUnit.Pixel, attr);
}
}
return transpBmp;