我已经开始考虑做一些类似的事情,所以这可能会给你一个开始.
对于第一个版本,您可以首先查看Form的“AllowTransparency”和“TransparencyKey”以及“TopMost”属性.
(我发现TransparencyKey不适用于White(255,255,255),但是特定的非白色工作正常……不确定原因).
这可以作为一种可以点击其他形式的点击式表格…但由于它是透明的,因此无法在透明部分中显示图像.但是,如果你需要的只是一个适合目标应用程序的hud,这可能是最简单的方法.
如果这个顶级形式不会在游戏前结束……你可能会尝试将游戏置于窗口模式.
在全屏模式下运行时,游戏通常直接通过ActiveX,Direct3D,OpenGL,DirectDraw等绘制到屏幕上.
在这些之上绘图需要将代码注入DirectX,OpenGL或其他引擎的绘制/更新/刷新功能(基本上告诉DirectX3D在每个绘制周期结束时绘制您的东西).有一些现有的软件可以做到这一点：例如,Steam Overlay,fraps,xfire.
一个快速的谷歌搜索发现“Game Overlay”虽然我没有下载或试过,说它可以覆盖表格应用程序在游戏之上.
(似乎那个程序是在一家刚刚解散的公司之下,无论如何我似乎无法让它为我工作……)
可以创建一个不完全透明但通过本机Windows调用可以点击的表单.我会看看是否可以在接下来的几天内创建一个示例.
我找到了一个旧的测试项目,并对其进行了一些清理.
基本上,当它运行时,它将在屏幕的前面绘制500条随机红线,这些红线是可点击的.然后它绘制1000条随机白线(即擦除).然后重复.
在编写代码时,我希望获得一些概念证明：如何能够在表单的整个表面上绘制,如何以编程方式使表单在多个屏幕上变为完整大小,如何使用背景工作者,以及这个概念证明如何作为透明叠加层工作.
说明：
>创建名为TranparentOverlay_simpleExample的新Windows窗体项目
>在设计视图中,在Form1上设置以下属性：
> BackColor：白色
> FormBorderStyle：无
>位置：-1280,0(即屏幕的左上角,一个屏幕可能只有0,0)
> TopMost：是的
> TransparencyKey：白色
> WindowState：最大化
现在输入Form1的代码视图并将其替换为以下内容：
@H_
404_55@using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Threading;
using System.Runtime.InteropServices;
namespace TransparentOverlay_simpleExample
{
public partial class Form1 : Form
{
BackgroundWorker bw = new BackgroundWorker();
Random rand = new Random(DateTime.Now.Millisecond);
[DllImport("user32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool BringWindowToTop(IntPtr hWnd);
[DllImport("user32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool SetForegroundWindow(IntPtr hWnd);
[DllImport("user32.dll",EntryPoint = "SetWindowPos")]
public static extern IntPtr SetWindowPos(IntPtr hWnd,int hWndInsertAfter,int x,int Y,int cx,int cy,int wFlags);
[DllImport("user32.dll")]
static extern int SendMessage(IntPtr hWnd,uint wMsg,UIntPtr wParam,IntPtr lParam); //used for maximizing the screen
const int WM_SYSCOMMAND = 0x0112; //used for maximizing the screen.
const int myWParam = 0xf120; //used for maximizing the screen.
const int myLparam = 0x5073d; //used for maximizing the screen.
int oldWindowLong;
[Flags]
enum WindowStyles : uint
{
WS_OVERLAPPED = 0x00000000,WS_POPUP = 0x80000000,WS_CHILD = 0x40000000,WS_MINIMIZE = 0x20000000,WS_VISIBLE = 0x10000000,WS_DISABLED = 0x08000000,WS_CLIPSIBLINGS = 0x04000000,WS_CLIPCHILDREN = 0x02000000,WS_MAXIMIZE = 0x01000000,WS_BORDER = 0x00800000,WS_DLGFRAME = 0x00400000,WS_VSCROLL = 0x00200000,WS_HSCROLL = 0x00100000,WS_SYSMENU = 0x00080000,WS_THICKFRAME = 0x00040000,WS_GROUP = 0x00020000,WS_TABSTOP = 0x00010000,WS_MINIMIZE
Box = 0x00020000,WS_MAXIMIZE
Box = 0x00010000,WS_CAPTION = WS_BORDER | WS_DLGFRAME,WS_TILED = WS_OVERLAPPED,WS_ICONIC = WS_MINIMIZE,WS_SIZE
Box = WS_THICKFRAME,WS_TILEDWINDOW = WS_OVERLAPPEDWINDOW,WS_OVERLAPPEDWINDOW = WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_THICKFRAME | WS_MINIMIZE
Box | WS_MAXIMIZE
Box,WS_POPUPWINDOW = WS_POPUP | WS_BORDER | WS_SYSMENU,WS_CHILDWINDOW = WS_CHILD,//Extended Window Styles
WS_EX_DLGMODALFRAME = 0x00000001,WS_EX_NOPARENTNOTIFY = 0x00000004,WS_EX_TOPMOST = 0x00000008,WS_EX_ACCEPTFILES = 0x00000010,WS_EX_TRANSPARENT = 0x00000020,//#if(WINVER >= 0x0400)
WS_EX_MDICHILD = 0x00000040,WS_EX_TOOLWINDOW = 0x00000080,WS_EX_WINDOWEDGE = 0x00000100,WS_EX_CLIENTEDGE = 0x00000200,WS_EX_CONTEXTHELP = 0x00000400,WS_EX_RIGHT = 0x00001000,WS_EX_LEFT = 0x00000000,WS_EX_RTLREADING = 0x00002000,WS_EX_LTRREADING = 0x00000000,WS_EX_LEFTSCROLLBAR = 0x00004000,WS_EX_RIGHTSCROLLBAR = 0x00000000,WS_EX_CONTROLPARENT = 0x00010000,WS_EX_STATICEDGE = 0x00020000,WS_EX_APPWINDOW = 0x00040000,WS_EX_OVERLAPPEDWINDOW = (WS_EX_WINDOWEDGE | WS_EX_CLIENTEDGE),WS_EX_PALETTEWINDOW = (WS_EX_WINDOWEDGE | WS_EX_TOOLWINDOW | WS_EX_TOPMOST),//#endif /* WINVER >= 0x0400 */
//#if(WIN32WINNT >= 0x0500)
WS_EX_LAYERED = 0x00080000,//#endif /* WIN32WINNT >= 0x0500 */
//#if(WINVER >= 0x0500)
WS_EX_NOINHERITLAYOUT = 0x00100000,// Disable inheritence of mirroring by children
WS_EX_LAYOUTRTL = 0x00400000,// Right to left mirroring
//#endif /* WINVER >= 0x0500 */
//#if(WIN32WINNT >= 0x0500)
WS_EX_COMPOSITED = 0x02000000,WS_EX_NOACTIVATE = 0x08000000
//#endif /* WIN32WINNT >= 0x0500 */
}
public enum GetWindowLongConst
{
GWL_WNDPROC = (-4),GWL_HINSTANCE = (-6),GWL_HWNDPARENT = (-8),GWL_STYLE = (-16),GWL_EXSTYLE = (-20),GWL_USERDATA = (-21),GWL_ID = (-12)
}
public enum LWA
{
ColorKey = 0x1,Alpha = 0x2,}
[DllImport("user32.dll",SetLastError = true)]
static extern int GetWindowLong(IntPtr hWnd,int nIndex);
[DllImport("user32.dll")]
static extern int SetWindowLong(IntPtr hWnd,int nIndex,int dwNewLong);
[DllImport("user32.dll")]
static extern bool SetLayeredWindowAttributes(IntPtr hwnd,uint crKey,byte bAlpha,uint dwFlags);
/// <summary>
/// Make the form (specified by its handle) a window that supports transparency.
/// </summary>
/// <param name="Handle">The window to make transparency supporting</param>
public void SetFormTransparent(IntPtr Handle)
{
oldWindowLong = GetWindowLong(Handle,(int)GetWindowLongConst.GWL_EXSTYLE);
SetWindowLong(Handle,(int)GetWindowLongConst.GWL_EXSTYLE,Convert.ToInt32( oldWindowLong | (uint)WindowStyles.WS_EX_LAYERED | (uint)WindowStyles.WS_EX_TRANSPARENT));
}
/// <summary>
/// Make the form (specified by its handle) a normal type of window (doesn't support transparency).
/// </summary>
/// <param name="Handle">The Window to make normal</param>
public void SetFormNormal(IntPtr Handle)
{
SetWindowLong(Handle,Convert.ToInt32(oldWindowLong | (uint)WindowStyles.WS_EX_LAYERED));
}
/// <summary>
/// Makes the form change White to Transparent and clickthrough-able
/// Can be modified to make the form translucent (with different opacities) and change the Transparency Color.
/// </summary>
public void SetTheLayeredWindowAttribute()
{
uint transparentColor = 0xffffffff;
SetLayeredWindowAttributes(this.Handle,transparentColor,125,0x2);
this.TransparencyKey = Color.White;
}
/// <summary>
/// Finds the Size of all computer screens combined (assumes screens are left to right,not above and below).
/// </summary>
/// <returns>The width and height of all screens combined</returns>
public static Size getFullScreensSize()
{
int height = int.MinValue;
int width = 0;
foreach (Screen screen in System.Windows.Forms.Screen.AllScreens)
{
//take largest height
height = Math.Max(screen.WorkingArea.Height,height);
width += screen.Bounds.Width;
}
return new Size(width,height);
}
/// <summary>
/// Finds the top left pixel position (with multiple screens this is often not 0,0)
/// </summary>
/// <returns>Position of top left pixel</returns>
public static Point getTopLeft()
{
int minX = int.MaxValue;
int minY = int.MaxValue;
foreach (Screen screen in System.Windows.Forms.Screen.AllScreens)
{
minX = Math.Min(screen.WorkingArea.Left,minX);
minY = Math.Min(screen.WorkingArea.Top,minY);
}
return new Point( minX,minY );
}
public Form1()
{
InitializeComponent();
MaximizeEverything();
SetFormTransparent(this.Handle);
SetTheLayeredWindowAttribute();
BackgroundWorker tmpBw = new BackgroundWorker();
tmpBw.DoWork += new DoWorkEventHandler(bw_DoWork);
this.bw = tmpBw;
this.bw.RunWorkerAsync();
}
private void MaximizeEverything()
{
this.Location = getTopLeft();
this.Size = getFullScreensSize();
SendMessage(this.Handle,WM_SYSCOMMAND,(UIntPtr)myWParam,(IntPtr)myLparam);
}
private void bw_DoWork(object sender,DoWorkEventArgs e)
{
BackgroundWorker worker = sender as BackgroundWorker;
int numRedLines = 500;
int numWhiteLines = 1000;
Size fullSize = getFullScreensSize();
Point topLeft = getTopLeft();
using (Pen redPen = new Pen(Color.Red,10f),whitePen = new Pen(Color.White,10f)) {
using (Graphics formGraphics = this.CreateGraphics()) {
while (true) {
bool makeRedLines = true;
for (int i = 0; i < numRedLines + numWhiteLines; i++)
{
if (i > numRedLines)
{
makeRedLines = false;
}
//Choose points for random lines...but don't draw over the top 100 px of the screen so you can
//still find the stop run button.
int pX = rand.Next(0,(-1 * topLeft.X) + fullSize.Width);
int pY = rand.Next(100,(-1 * topLeft.Y) + fullSize.Height);
int qX = rand.Next(0,(-1 * topLeft.X) + fullSize.Width);
int qY = rand.Next(100,(-1 * topLeft.Y) + fullSize.Height);
if (makeRedLines)
{
formGraphics.DrawLine(redPen,pX,pY,qX,qY);
}
else
{
formGraphics.DrawLine(whitePen,qY);
}
Thread.Sleep(10);
}
}
}
}
}
}
}
Enums列表是在本机Windows调用中使用的值,并将像White这样的RGB颜色转换为uints使得处理本机Windows有点痛苦.
但是,最后,我们现在有一个覆盖所有屏幕的隐形画布,我们可以像任何其他图形对象一样绘制它(所以它就像在线条上一样容易地绘制文本或图片).
(我认为如果你将半透明的图片绘制到图形对象上,那么你可以自己制作半透明的叠加而不是完全不透明/透明的叠加).
此示例不能在全屏3D游戏上放置叠加层,但对于在窗口模式下运行的相同游戏可以正常工作.
(P.S.我刚刚在Team Fortress 2中对它进行了测试,它在Windowed模式下绘制它,但不是全屏,所以我猜测旧共和国将是类似的).
以下链接可能对试图挂钩Direct3D版本9,10和11的绘图例程的任何人都有用.
http://spazzarama.com/2011/03/14/c-screen-capture-and-overlays-for-direct3d-9-10-and-11-using-api-hooks/
https://github.com/spazzarama/Direct3DHook
它不提供全功能覆盖,但上面的示例项目为我成功地在Team Fortress 2上每秒写入帧.它有关于如何开始使用它的良好说明.它应该指导您完成设置SlimDX Runtime和EasyHook的过程.
