按下button，弹出半透明异形窗体与红框，运行效果如图
但是问题来了，主窗体form1与AlphaForm中间可以插入外部软件的窗体，效果如图
大神有没有办法，将两窗体“捆绑”，中间无法插入其他窗体
我的代码如下，
namespace WindowsFormsApplication4
{
public partial class Form1 : Form
{
AlphaForm putForm;//放外面来
bool sign = true;
public Form1()
{
InitializeComponent();
pictureBox1.Load (@"C:\6.png");
}
private void Form1_Move(object sender, EventArgs e)
{
putForm.Location = new Point(this.Location.X +7 , this.Location.Y + 29);
}
private void button1_Click_1(object sender, EventArgs e)
{
if (sign == true)
{
Bitmap bmp = new Bitmap(401,301);
bmp = potholing(50, 50, 170, 170, bmp, 120, 0);
Graphics g = Graphics.FromImage(bmp);
Pen p = new Pen(Color.Red, 2);
g.DrawRectangle(p, 50, 50, 120, 120);
putForm = new AlphaForm(); //alpha通道的显示图像窗体
putForm.Location = new Point(this.Location.X + 7, this.Location.Y + 29);//框显示在Form1 100x100的位置
putForm.SetBitmap(bmp, 255); //设置图像
putForm.Show(); //显示窗体
sign = false;
}
}
public Bitmap potholing(int _x, int _y, int _width, int _height, Bitmap src, int num, int trans)
{
try
{
int w = src.Width;
int h = src.Height;
Bitmap dstBitmap = new Bitmap(src.Width, src.Height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
System.Drawing.Imaging.BitmapData srcData = src.LockBits(new Rectangle(0, 0, w, h), System.Drawing.Imaging.ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
System.Drawing.Imaging.BitmapData dstData = dstBitmap.LockBits(new Rectangle(0, 0, w, h), System.Drawing.Imaging.ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
unsafe
{
byte* pIn = (byte*)srcData.Scan0.ToPointer();
byte* pOut = (byte*)dstData.Scan0.ToPointer();
byte* p;
int stride = srcData.Stride;
int r, g, b;
for (int y = 0; y < h; y++)
{
for (int x = 0; x < w; x++)
{
p = pIn;
b = pIn[0];
g = pIn[1];
r = pIn[2];
pOut[1] = (byte)g;
pOut[2] = (byte)r;
if ((y > _y) && (y < _height) && (x > _x) && (x < _height))
{
pOut[3] = (byte)trans;
}
else pOut[3] = (byte)num;
pOut[0] = (byte)b;
pIn += 4;
pOut += 4;
}
pIn += srcData.Stride - w * 4;
pOut += srcData.Stride - w * 4;
}
src.UnlockBits(srcData);
dstBitmap.UnlockBits(dstData);
return dstBitmap;
}
}
catch (Exception e)
{
MessageBox.Show(e.Message.ToString());
return null;
}
}
}
namespace WindowsFormsApplication4
{
public partial class AlphaForm : Form
{
class Alpha_Win32
{
public enum Bool
{
False = 0,
True
};
[StructLayout(LayoutKind.Sequential)]
public struct Point
{
public Int32 x;
public Int32 y;
public Point(Int32 x, Int32 y) { this.x = x; this.y = y; }
}
[StructLayout(LayoutKind.Sequential)]
public struct Size
{
public Int32 cx;
public Int32 cy;
public Size(Int32 cx, Int32 cy) { this.cx = cx; this.cy = cy; }
}
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct ARGB
{
public byte Blue;
public byte Green;
public byte Red;
public byte Alpha;
}
[StructLayout(LayoutKind.Sequential, Pack = 1)]
public struct BLENDFUNCTION
{
public byte BlendOp;
public byte BlendFlags;
public byte SourceConstantAlpha;
public byte AlphaFormat;
}
public const Int32 ULW_COLORKEY = 0x00000001;
public const Int32 ULW_ALPHA = 0x00000002;
public const Int32 ULW_OPAQUE = 0x00000004;
public const byte AC_SRC_OVER = 0x00;
public const byte AC_SRC_ALPHA = 0x01;
[DllImport("user32.dll", ExactSpelling = true, SetLastError = true)]
public static extern Bool UpdateLayeredWindow(IntPtr hwnd, IntPtr hdcDst, ref Point pptDst, ref Size psize, IntPtr hdcSrc, ref Point pprSrc, Int32 crKey, ref BLENDFUNCTION pblend, Int32 dwFlags);
[DllImport("user32.dll", ExactSpelling = true, SetLastError = true)]
public static extern IntPtr GetDC(IntPtr hWnd);
[DllImport("user32.dll", ExactSpelling = true)]
public static extern int ReleaseDC(IntPtr hWnd, IntPtr hDC);
[DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
public static extern IntPtr CreateCompatibleDC(IntPtr hDC);
[DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
public static extern Bool DeleteDC(IntPtr hdc);
[DllImport("gdi32.dll", ExactSpelling = true)]
public static extern IntPtr SelectObject(IntPtr hDC, IntPtr hObject);
[DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
public static extern Bool DeleteObject(IntPtr hObject);
}
public AlphaForm()
{
FormBorderStyle = FormBorderStyle.None;
DoubleBuffered = true;
TopMost = true;
ShowInTaskbar = false;
}
public void SetBitmap(Bitmap bitmap)
{
SetBitmap(bitmap, 255);
}
public void SetBitmap(Bitmap bitmap, byte opacity)
{
/*
if (bitmap.PixelFormat != PixelFormat.Format32bppArgb)
throw new ApplicationException("The bitmap must be 32ppp with alpha-channel."+ bitmap.PixelFormat);
*/
IntPtr screenDc = Alpha_Win32.GetDC(IntPtr.Zero);
IntPtr memDc = Alpha_Win32.CreateCompatibleDC(screenDc);
IntPtr hBitmap = IntPtr.Zero;
IntPtr oldBitmap = IntPtr.Zero;
try
{
hBitmap = bitmap.GetHbitmap(Color.FromArgb(0));
oldBitmap = Alpha_Win32.SelectObject(memDc, hBitmap);
Alpha_Win32.Size size = new Alpha_Win32.Size(bitmap.Width, bitmap.Height);
Alpha_Win32.Point pointSource = new Alpha_Win32.Point(0, 0);
Alpha_Win32.Point topPos = new Alpha_Win32.Point(Left, Top);
Alpha_Win32.BLENDFUNCTION blend = new Alpha_Win32.BLENDFUNCTION();
blend.BlendOp = Alpha_Win32.AC_SRC_OVER;
blend.BlendFlags = 0;
blend.SourceConstantAlpha = opacity;
blend.AlphaFormat = Alpha_Win32.AC_SRC_ALPHA;
Alpha_Win32.UpdateLayeredWindow(Handle, screenDc, ref topPos, ref size, memDc, ref pointSource, 0, ref blend, Alpha_Win32.ULW_ALPHA);
GC.Collect();
}
finally
{
Alpha_Win32.ReleaseDC(IntPtr.Zero, screenDc);
if (hBitmap != IntPtr.Zero)
{
Alpha_Win32.SelectObject(memDc, oldBitmap);
Alpha_Win32.DeleteObject(hBitmap);
}
Alpha_Win32.DeleteDC(memDc);
}
}
protected override CreateParams CreateParams
{
get
{
CreateParams cp = base.CreateParams;
cp.ExStyle |= 0x00080000;
return cp;
}
}
}
}
