We Keep Coding

How to get the windows messages according to the child?

I am creating a form inside another form. In the child form I have created taskbar button. I am overriding WndProc in the button.I am referring https://www.codeproject.com/Articles/10171/Adding-a-Minimize-to-tray-button-to-a-Form-s-caption bar. But whenever I am getting messages(mouse coordinates) , it is given with respect to the parent form. This makes trouble in calculations .I want those with respect to child form.How to achieve this?
This is the code for form1
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
Form2 form2 = new Form2();
form2.TopLevel = false;
form2.AutoScroll = true;
form2.Anchor = AnchorStyles.Top;
form2.Dock = DockStyle.Fill;
this.splitContainer1.Panel2.Controls.Add(form2);
form2.Show();
}
}
this is form2.
public partial class Form2 : Form
{
TyronM.MinTrayBtn Pin_Button;
public Form2()
{
InitializeComponent();
Pin_Button = new TyronM.MinTrayBtn(this);
Pin_Button.MinTrayBtnClicked += new TyronM.MinTrayBtnClickedEventHandler(this.Pin_Button_Clicked);
}
public void Pin_Button_Clicked(object sender, EventArgs e)
{
MessageBox.Show("Pin button got Clicked");
}
protected override void WndProc(ref Message message)
{
const int WM_SYSCOMMAND = 0x0112;
const int SC_MOVE = 0xF010;
switch (message.Msg)
{
case WM_SYSCOMMAND:
int command = message.WParam.ToInt32() & 0xfff0;
if (command == SC_MOVE)
return;
break;
}
base.WndProc(ref message);
}
}
And this is for button.
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Diagnostics;
using System.Resources;
using System.Runtime.InteropServices;
namespace TyronM {
public delegate void MinTrayBtnClickedEventHandler(object sender, EventArgs e);
/// <summary>
/// Summary description for Class.
/// </summary>
public class MinTrayBtn : NativeWindow {
bool pinned = false;
bool pressed = false;
Size wnd_size = new Size();
public bool captured;
Form parent;
public event MinTrayBtnClickedEventHandler MinTrayBtnClicked;
#region Constants
const int WM_SIZE = 5;
const int WM_SYNCPAINT = 136;
const int WM_MOVE = 3;
const int WM_ACTIVATE = 6;
const int WM_LBUTTONDOWN =513;
const int WM_LBUTTONUP =514;
const int WM_LBUTTONDBLCLK =515;
const int WM_MOUSEMOVE = 512;
const int WM_PAINT = 15;
const int WM_GETTEXT = 13;
const int WM_NCCREATE =129;
const int WM_NCLBUTTONDOWN = 161;
const int WM_NCLBUTTONUP = 162;
const int WM_NCMOUSEMOVE = 160;
const int WM_NCACTIVATE =134;
const int WM_NCPAINT = 133;
const int WM_NCHITTEST = 132;
const int WM_NCLBUTTONDBLCLK = 163;
const int VK_LBUTTON = 1;
const int SM_CXSIZE = 30;
const int SM_CYSIZE = 31;
#endregion
#region Extra Constants
const int WM_MBUTTONUP = 0x0208;
#endregion
#region WinAPI Imports
[DllImport("user32")]
public static extern int GetWindowDC(int hwnd);
[DllImport("user32")]
public static extern short GetAsyncKeyState(int vKey);
[DllImport("user32")]
public static extern int SetCapture(int hwnd);
[DllImport("user32")]
public static extern bool ReleaseCapture();
[DllImport("user32")]
public static extern int GetSysColor(int nIndex);
[DllImport("user32")]
public static extern int GetSystemMetrics(int nIndex);
#endregion
#region Constructor and Handle-Handler ^^
public MinTrayBtn(Form parent) {
parent.HandleCreated += new EventHandler(this.OnHandleCreated);
parent.HandleDestroyed+= new EventHandler(this.OnHandleDestroyed);
parent.TextChanged+= new EventHandler(this.OnTextChanged);
this.parent = parent;
}
// Listen for the control's window creation and then hook into it.
internal void OnHandleCreated(object sender, EventArgs e){
// Window is now created, assign handle to NativeWindow.
AssignHandle(((Form)sender).Handle);
}
internal void OnHandleDestroyed(object sender, EventArgs e) {
// Window was destroyed, release hook.
ReleaseHandle();
}
// Changing the Text invalidates the Window, so we got to Draw the Button again
private void OnTextChanged(object sender, EventArgs e) {
DrawButton();
}
#endregion
#region WndProc
[System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.Demand, Name="FullTrust")]
protected override void WndProc(ref Message m){
//label3.Text = "Button pressed: " + pressed;
//label4.Text = "Mouse captured: " + captured;
// Change the Pressed-State of the Button when the User pressed the
// left mouse button and moves the cursor over the button
if (m.Msg == WM_LBUTTONDBLCLK ||m.Msg == WM_LBUTTONDOWN || m.Msg == WM_LBUTTONUP
||m.Msg == WM_MBUTTONUP
)
MessageBox.Show("click happened");
if(m.Msg==WM_MOUSEMOVE) {
Point pnt2 = new Point((int)m.LParam);
Size rel_pos2 = new Size(parent.PointToClient(new Point(parent.Location.X, parent.Location.Y)));
// Not needed because SetCapture seems to convert the cordinates anyway
//pnt2 = PointToClient(pnt2);
pnt2-=rel_pos2;
//label2.Text = "Cursor #"+pnt2.X+"/"+pnt2.Y;
if(pressed) {
Point pnt = new Point((int)m.LParam);
Size rel_pos = new Size(parent.PointToClient(new Point(parent.Location.X, parent.Location.Y)));
//pnt = PointToClient(pnt);
pnt-=rel_pos;
if(!MouseinBtn(pnt)) {
pressed = false;
DrawButton();
}
} else {
if((GetAsyncKeyState(VK_LBUTTON)&(-32768))!=0) {
Point pnt = new Point((int)m.LParam);
Size rel_pos = new Size(parent.PointToClient(new Point(parent.Location.X, parent.Location.Y)));
//pnt = PointToClient(pnt);
pnt-=rel_pos;
if(MouseinBtn(pnt)) {
pressed = true;
DrawButton();
}
}
}
}
// Ignore Double-Clicks on the Traybutton
if(m.Msg==WM_NCLBUTTONDBLCLK) {
Point pnt = new Point((int)m.LParam);
Size rel_pos = new Size(parent.PointToClient(new Point(parent.Location.X, parent.Location.Y)));
pnt = parent.PointToClient(pnt);
pnt-=rel_pos;
if(MouseinBtn(pnt)) {
return;
}
}
#region NOT WORKING
// Button released and eventually clicked
if(m.Msg==WM_LBUTTONUP)
{
ReleaseCapture();
captured = false;
if(pressed) {
pressed = false;
DrawButton();
Point pnt = new Point((int)m.LParam);
Size rel_pos = new Size(parent.PointToClient(new Point(parent.Location.X, parent.Location.Y)));
pnt-=rel_pos;
if(MouseinBtn(pnt)) {
//TrayButton_clicked();
EventArgs e = new EventArgs();
if (MinTrayBtnClicked != null)
MinTrayBtnClicked(this, e);
return;
}
}
}
#endregion
// Clicking the Button - Capture the Mouse and await until the Uses relases the Button again
if(m.Msg==WM_NCLBUTTONDOWN) {
//MessageBox.Show("clicked");
Point pnt = new Point((int)m.LParam);
Size rel_pos = new Size(parent.PointToClient(new Point(parent.Location.X, parent.Location.Y)));
pnt = parent.PointToClient(pnt);
pnt-=rel_pos;
if(MouseinBtn(pnt)) {
MessageBox.Show("clicked");
pressed = true;
DrawButton();
SetCapture((int)parent.Handle);
captured = true;
return;
}
}
// Drawing the Button and getting the Real Size of the Window
if(m.Msg == WM_ACTIVATE || m.Msg==WM_SIZE || m.Msg==WM_SYNCPAINT || m.Msg==WM_NCACTIVATE || m.Msg==WM_NCCREATE || m.Msg==WM_NCPAINT || m.Msg==WM_NCACTIVATE || m.Msg==WM_NCHITTEST || m.Msg==WM_PAINT) {
if(m.Msg==WM_SIZE) wnd_size = new Size(new Point((int)m.LParam));
DrawButton();
}
base.WndProc(ref m);
}
#endregion
#region Button-Specific Functions
public bool MouseinBtn(Point click) {
int btn_width = GetSystemMetrics(SM_CXSIZE);
int btn_height = GetSystemMetrics(SM_CYSIZE);
Size btn_size = new Size(btn_width, btn_height);
Point pos = new Point(wnd_size.Width - 3 * btn_width - 12 - (btn_width - 18)+7, 6+4);
return click.X>=pos.X && click.X<=pos.X+btn_size.Width &&
click.Y>=pos.Y && click.Y<=pos.Y+btn_size.Height;
}
public void DrawButton() {
Graphics g = Graphics.FromHdc((IntPtr)GetWindowDC((int)parent.Handle)); //m.HWnd));
DrawButton(g, pressed);
}
public void DrawButton(Graphics g, bool pressed) {
int btn_width = GetSystemMetrics(SM_CXSIZE);
int btn_height = GetSystemMetrics(SM_CYSIZE);
//Point pos = new Point(wnd_size.Width-3*btn_width-12-(btn_width-18),6);
Point pos = new Point(wnd_size.Width - 3 * btn_width - 12 - (btn_width - 18)+7, 6+4);
// real button size
btn_width-=2;
btn_height-=4;
Color light = SystemColors.ControlLightLight;
Color icon = SystemColors.ControlText;
Color background = SystemColors.Control;
Color shadow1 = SystemColors.ControlDark;
Color shadow2 = SystemColors.ControlDarkDark;
Color tmp1, tmp2;
if(pressed) {
tmp1 = shadow2;
tmp2 = light;
} else {
tmp1 = light;
tmp2 = shadow2;
}
g.DrawLine(new Pen(tmp1),pos, new Point(pos.X+btn_width-1,pos.Y));
g.DrawLine(new Pen(tmp1),pos, new Point(pos.X,pos.Y+btn_height-1));
if(pressed) {
g.DrawLine(new Pen(shadow1),pos.X+1, pos.Y+1, pos.X+btn_width-2, pos.Y+1);
g.DrawLine(new Pen(shadow1),pos.X+1, pos.Y+1, pos.X+1, pos.Y+btn_height-2);
} else {
g.DrawLine(new Pen(shadow1),pos.X+btn_width-2, pos.Y+1, pos.X+btn_width-2, pos.Y+btn_height-2);
g.DrawLine(new Pen(shadow1),pos.X+1, pos.Y+btn_height-2, pos.X+btn_width-2, pos.Y+btn_height-2);
}
g.DrawLine(new Pen(tmp2),pos.X+btn_width-1, pos.Y+0, pos.X+btn_width-1, pos.Y+btn_height-1);
g.DrawLine(new Pen(tmp2),pos.X+0, pos.Y+btn_height-1, pos.X+btn_width-1, pos.Y+btn_height-1);
g.FillRectangle(new SolidBrush(background),pos.X+1+Convert.ToInt32(pressed), pos.Y+1+Convert.ToInt32(pressed), btn_width-3,btn_height-3);
#region Added Code
g.FillRectangle(new SolidBrush(icon),pos.X+(float)0.5625*btn_width+Convert.ToInt32(pressed),pos.Y+(float)0.6428*btn_height+Convert.ToInt32(pressed),btn_width*(float)0.1875,btn_height*(float)0.143);
g.DrawImage(Image.FromFile("red_Pushpin.jfif"),new Rectangle( pos,new Size(btn_width,btn_height)));
#endregion
}
#endregion
}
}
This is code for main
static class Program
{
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1());
}
}
This is the screenshot of the winform.
EDIT:
Upon investigation I found that WM_LBUTTONUP(Mouse left button up) is not triggered. Or it is not coming inside WndProc.
EDIT1:
It seems there was a problem in brackets.I changed the if conditions into switch case. This somewhat cleared the "Mouse left button up" problem. Now it is properly triggering. The remaining problem is mouse points based on parent form.

Disable input calls if cursor position is not inside element BoundingRectangle

I am getting the automation element on windows using mouse cordinates(x &y)
static Rect m_bRect = new Rect(0, 0, 0, 0);
AutomationElement element = AutomationElement.FromPoint(new Point((double)Cursor.Position.X, (double)Cursor.Position.Y));
m_bRect = element.Current.BoundingRectangle;
i want to achieve one functionality that if user cursor position is not inside element Boundingrectangle then Block the input calls using API user32.dll, for that i have written below code on mouse down operation.
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
public static extern void BlockInput([In, MarshalAs(UnmanagedType.Bool)]bool fBlockIt);
[DllImport("User32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool GetCursorPos(ref POINT p);
private void HookManager_MouseDown(object sender, MouseEventArgs e)
{
POINT l_objPoint = new POINT();
bool l_bretVal = GetCursorPos(ref l_objPoint);
while (!m_bRect .Contains(l_objPoint.X, l_objPoint.Y)
{
BlockInput(true);
break;
}
}
But above code is not working as expected, it takes user clicks even if user cursor is not inside automation element boundingrectangle.
I have also tried another approach using timer tick please check below code but here Automationelement is not captured correctly.
private void OnHovering()
{
System.Windows.Forms.Timer _timerOnHover = new System.Windows.Forms.Timer();
_timerOnHover.Tick += new EventHandler(_timerOnHovering_Tick);
_timerOnHover.Interval = 100;
_timerOnHover.Start();
}
private void _timerOnHovering_Tick(object sender, EventArgs e)
{
POINT currentPoint = new POINT();
bool l_bretVal = GetCursorPos(ref currentPoint);
if (!l_bretVal)
{
return;
}
if (!m_bRect.Contains(currentPoint.X, currentPoint.Y && !ISmouseMove)
{
BlockInput(true);
}
else
{
BlockInput(false);
}
}
}

Perform a mouse Click event on another Application using C#

what i need to do is that I need to control another application installed on the same machine using my custom application. For example if i needed to use the standard windows calculator I would simply send the input events to the calculator. I have used some code snippets to make this possible and I have now triggered both mouse and keyboard events. but the problem is that i can be sure that the keyboard event will hit the target application because it has the process handle. but i cannot be sure about the mouse. and also if the target application goes into background, i cannot initiate mouse clicks on it. I need help to find a way to make sure that the mouse click is done on the application only.
I need to send mouse co-ordinates and click as well. for example "sendMouseClick("Notepad", 100, 400); which will send a click to Notepad, even though it stays minimized.
IMPORTANT NOTE
A similar question is answered previously but that is in reference to first finding the state of the other application and then sending the inputs either keyboard or mouse, what i need to do is to send an application a set of instructions that must work whether the application is in foreground or not.
For "The other Guys":: if you dont want to help or cant help, thats okay but please do know that i havent stolen the question or anything. I simply want to achieve this task in C#.
The code I have to simulate keyboard key Press is:
using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Drawing;
using System.Windows.Forms;
namespace SimulateKeyPress
{
partial class Form1 : Form
{
private Button button1 = new Button();
private Button button2 = new Button();
private Button button3 = new Button();
[STAThread]
public static void Main()
{
Application.EnableVisualStyles();
Application.Run(new Form1());
}
public Form1()
{
button1.Location = new Point(10, 10);
button1.TabIndex = 1;
button1.Text = "Click to automate Calculator";
button1.AutoSize = true;
button1.Click += new EventHandler(button1_Click);
button2.Location = new Point(150, 140);
button2.TabIndex = 0;
button2.Text = "Click to Exit Calculator";
button2.AutoSize = true;
button2.Location = new Point(80, 80);
button2.TabIndex = 2;
button2.Text = "Click to Run Calculator";
button2.AutoSize = true;
button2.Click += new EventHandler(button2_Click);
this.DoubleClick += new EventHandler(Form1_DoubleClick);
this.Controls.Add(button1);
this.Controls.Add(button2);
// this.Controls.Add(button3);
}
// Get a handle to an application window.
[DllImport("USER32.DLL", CharSet = CharSet.Unicode)]
public static extern IntPtr FindWindow(string lpClassName,
string lpWindowName);
// Activate an application window.
[DllImport("USER32.DLL")]
public static extern bool SetForegroundWindow(IntPtr hWnd);
// Send a series of key presses to the Calculator application.
private void button1_Click(object sender, EventArgs e)
{
// Get a handle to the Calculator application. The window class
// and window name were obtained using the Spy++ tool.
IntPtr calculatorHandle = FindWindow("CalcFrame", "Calculator");
//Process firstProc = new Process();
//firstProc.StartInfo.FileName = "calc.exe";
//firstProc.EnableRaisingEvents = true;
//firstProc.Start();
// Verify that Calculator is a running process.
if (calculatorHandle == IntPtr.Zero)
{
MessageBox.Show("Calculator is not running.");
return;
}
// Make Calculator the foreground application and send it
// a set of calculations.
SetForegroundWindow(calculatorHandle);
SendKeys.SendWait("1024");
SendKeys.SendWait("*");
SendKeys.SendWait("32");
SendKeys.SendWait("=");
}
private void button2_Click(object sender, EventArgs e)
{
System.Diagnostics.Process.Start("calc.exe");
}
private void button3_Click(object sender,EventArgs e)
{
Process [] proc =Process.GetProcessesByName("Calculator");
proc[0].Kill();
}
// Send a key to the button when the user double-clicks anywhere
// on the form.
private void Form1_DoubleClick(object sender, EventArgs e)
{
// Send the enter key to the button, which raises the click
// event for the button. This works because the tab stop of
// the button is 0.
SendKeys.Send("{ENTER}");
}
}
}
the previous help on stack overflow, msdn and other sites provides the code to simulate a mouse click in the same application. But i need to send mouse hits to another application.

Maybe this could help you
Code
The task
Getting the mouse's current position
Sending the mouse event
Windows forms
...
using System.Runtime.InteropServices;
namespace yournamespace
{
public partial class yourclassname
{
[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
public static extern void mouse_event(uint dwFlags, uint dx, uint dy, uint cButtons, uint dwExtraInfo);
private const int MOUSEEVENTF_LEFTDOWN = 0x02;
private const int MOUSEEVENTF_LEFTUP = 0x04;
private const int MOUSEEVENTF_RIGHTDOWN = 0x08;
private const int MOUSEEVENTF_RIGHTUP = 0x10;
int X = Cursor.Position.X;
int Y = Cursor.Position.Y;
mouse_event(MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP, X, Y, 0, 0);
}
}
WPF
Things are a bit harder in WPF
double mousePointX;
double mousePointY;
[DllImport("user32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool GetCursorPos(out POINT lpPoint);
[StructLayout(LayoutKind.Sequential)]
public struct POINT
{
public int X;
public int Y;
public POINT(int x, int y)
{
this.X = x;
this.Y = y;
}
}
private void WritePoint(object sender, RoutedEventArgs e)
{
POINT p;
if (GetCursorPos(out p))
{
System.Console.WriteLine(Convert.ToString(p.X) + ";" + Convert.ToString(p.Y));
}
}
[DllImport("User32.dll")]
static extern IntPtr GetDC(IntPtr hwnd);
[DllImport("gdi32.dll")]
static extern int GetDeviceCaps(IntPtr hdc, int nIndex);
[DllImport("user32.dll")]
static extern bool ReleaseDC(IntPtr hWnd, IntPtr hDC);
private Point ConvertPixelsToUnits(int x, int y)
{
// get the system DPI
IntPtr dDC = GetDC(IntPtr.Zero); // Get desktop DC
int dpi = GetDeviceCaps(dDC, 88);
bool rv = ReleaseDC(IntPtr.Zero, dDC);
// WPF's physical unit size is calculated by taking the
// "Device-Independant Unit Size" (always 1/96)
// and scaling it by the system DPI
double physicalUnitSize = (1d / 96d) * (double)dpi;
Point wpfUnits = new Point(physicalUnitSize * (double)x,
physicalUnitSize * (double)y);
return wpfUnits;
}
private void WriteMouseCoordinatesInWPFUnits()
{
POINT p;
if (GetCursorPos(out p))
{
Point wpfPoint = ConvertPixelsToUnits(p.X, p.Y);
System.Console.WriteLine(Convert.ToString(wpfPoint.X) + ";" + Convert.ToString(wpfPoint.Y));
mousePointY = wpfPoint.Y;
mousePointX = wpfPoint.X
}
}
Now the most important part of the code
[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
public static extern void mouse_event(uint dwFlags, uint dx, uint dy, uint cButtons, uint dwExtraInfo);
private const int MOUSEEVENTF_LEFTDOWN = 0x02;
private const int MOUSEEVENTF_LEFTUP = 0x04;
private const int MOUSEEVENTF_RIGHTDOWN = 0x08;
private const int MOUSEEVENTF_RIGHTUP = 0x10;
...
mouse_event(MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP, Convert.ToUInt32(mousePointX), Convert.ToUInt32(mousePointY), 0, 0);
...
Warning
The code is tested
The code is not a "copy & paste code

Show any Process like Modal Window

MessageBox.Show shows a window, and until the MessageBox window is not closed, clicking the main app will still let the MessageBox window have focus and make the MessageBox window flash. Same behavior is with the TaskDialog API, Form.ShowDialog(IWin32Window) and Window.ShowDialog().
How can I do this for a different process like Process.Start("notepad.exe")?

This hack may do the trick. but be sure you question yourself twice before using this.
private void DoEvil()
{
var windowField = typeof(Control).GetField("window", BindingFlags.Instance |
BindingFlags.NonPublic);
Form notepad = new Form();
NativeWindow window = (NativeWindow)windowField.GetValue(notepad);
var process = Process.Start("notepad.exe");
process.EnableRaisingEvents = true;
while (process.MainWindowHandle == IntPtr.Zero)
{
Thread.Sleep(1);
}
window.AssignHandle(process.MainWindowHandle);
Control.CheckForIllegalCrossThreadCalls = false;
EventHandler handler = (s, ev) => notepad.DialogResult = DialogResult.OK;
process.Exited += handler;
notepad.ShowDialog(this);
process.Exited -= handler;
Control.CheckForIllegalCrossThreadCalls = true;
}
Warning: Don't try this at home, office or anywhere :p

Ok, so this is what I have come up with, not the greatest or most elegant way to do it nor does it contains any error handling but I think it works,
What I do in my code is create a dummy form (Form2) with a Panel control and assign the parent of EXE to the handle (InPtr) of the panel. I have removed to the border of the form to make it look as flush as possible but there is still a noticeable flicker between the EXE loading and the SetParent method being called.
Form1 Code
private void button4_Click(object sender, EventArgs e)
{
using (var f2 = new Form2())
{
f2.ShowDialog(this);
}
}
Form2 Code
public partial class Form2 : Form
{
[DllImport("user32.dll", SetLastError = true)]
static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndNewParent);
[DllImport("user32.dll")]
static extern bool GetWindowRect(IntPtr hWnd, out RECT lpRect);
[DllImport("user32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int x, int y, int cx, int cy, SetWindowPosFlags uFlags);
private readonly BackgroundWorker worker = new BackgroundWorker();
private IntPtr mainHandle;
private IntPtr processHandle;
private Panel panel;
public Form2()
{
InitializeComponent();
worker.DoWork += worker_DoWork;
worker.RunWorkerCompleted += worker_RunWorkerCompleted;
FormBorderStyle = FormBorderStyle.None;
StartPosition = FormStartPosition.CenterParent;
AddPanel();
}
private void AddPanel()
{
panel = new Panel {Dock = DockStyle.Fill};
mainHandle = panel.Handle;
Controls.Add(panel);
}
private void Form2_Load(object sender, EventArgs e)
{
worker.RunWorkerAsync();
}
private void worker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
Invoke((MethodInvoker) Close);
}
private void worker_DoWork(object sender, DoWorkEventArgs e)
{
var process = Process.Start("cmd.exe", "/k echo echo");
if (process != null)
{
while (process.MainWindowHandle == IntPtr.Zero)
{
// Add some sort of timeout here, infintite loops are bad!!!
}
processHandle = process.MainWindowHandle;
// Get the size of the EXE window and apply it to this form.
var size = GetSize(processHandle);
Invoke((MethodInvoker) delegate { Size = new Size(size.Width, size.Height);});
// Hook the parent of the EXE window to this form
SetHandle(processHandle);
// Make sure the windows is positions at location x = 0, y = 0 of this form
SetWindowPos(processHandle, IntPtr.Zero, 0, 0, size.Width, size.Height, SetWindowPosFlags.SWP_ASYNCWINDOWPOS);
// wait for the EXE to terminate
process.WaitForExit();
// Unhook the closed process window
SetParent(processHandle, IntPtr.Zero);
}
}
private void SetHandle(IntPtr ptr)
{
if (ptr != IntPtr.Zero)
SetParent(processHandle, mainHandle);
}
private static Size GetSize(IntPtr hWnd)
{
RECT pRect;
var size = new Size();
GetWindowRect(hWnd, out pRect);
size.Width = pRect.Right - pRect.Left;
size.Height = pRect.Bottom - pRect.Top;
return size;
}
[StructLayout(LayoutKind.Sequential)]
private struct RECT
{
public int Left;
public int Top;
public int Right;
public int Bottom;
}
[Flags]
private enum SetWindowPosFlags : uint
{
SWP_ASYNCWINDOWPOS = 0x4000,
SWP_DEFERERASE = 0x2000,
SWP_DRAWFRAME = 0x0020,
SWP_FRAMECHANGED = 0x0020,
SWP_HIDEWINDOW = 0x0080,
SWP_NOACTIVATE = 0x0010,
SWP_NOCOPYBITS = 0x0100,
SWP_NOMOVE = 0x0002,
SWP_NOOWNERZORDER = 0x0200,
SWP_NOREDRAW = 0x0008,
SWP_NOREPOSITION = 0x0200,
SWP_NOSENDCHANGING = 0x0400,
SWP_NOSIZE = 0x0001,
SWP_NOZORDER = 0x0004,
SWP_SHOWWINDOW = 0x0040,
}
}

Look here: Wait till a process ends
In short, you can either use "process.WaitForExit();" to pause execution till the process exits, but I don't think this will flash the window or auto-focus to that process.
If you want the fancier UI stuff you're going to have to do something like this:
while (!process.HasExited)
{
//update UI
}
For switching the focus to another process, this should get you started.
EDIT:
Here's more info on flashing the window.

Ok, here's a solution that might work:
Start the process with the following code:
Process p = new Process("cmd");
p.Start();
p.WaitForExit();
Now, in the event handler for activating your application (active), set the focus on the process again. You can use process.HasExited to verify that you process is still running or not.
Note: I haven't tested it, but I think it should bring you close.

Create ListView ScrollBar Appeared Event

I have a ListView in which i want to create an event when the VScrollBar appears. I actully dont want a horizontal scrollbar and whenever the VScrollbar appears i want to resize the columns so that it fits the window. I already can check for the visiblity of a scrollbar but i dont know the name of the event which is triggered when the ScrollBars appear.
Here is my code :
private const int WS_VSCROLL = 0x200000;
private const int GWL_STYLE = -16;
[DllImport("user32.dll")]
public static extern int GetWindowLong(IntPtr hWnd, int Index);
private static bool IsScrollbarVisible(IntPtr hWnd)
{
bool bVisible = false;
int nMessage = WS_VSCROLL;
int nStyle = GetWindowLong(hWnd, GWL_STYLE);
bVisible = ((nStyle & nMessage) != 0);
return bVisible;
}
And Works Like this :
if (IsScrollbarVisible(listview.Handle))
{
columnHeader1.Width = listview.ClientRectangle.Width - (columnHeader2.Width + columnHeader3.Width);
}
Someone Please Help Me!

ClientSizeChanged Event will fire but to get it work correct we have to add BeginUpdate() and EndUpdate()..
This Code does everything :
private void listview_ClientSizeChanged(object sender, EventArgs e)
{
listview.BeginUpdate();
if (IsScrollbarVisible(listview.Handle))
{
columnHeader1.Width = listview.ClientRectangle.Width - (columnHeader2.Width + columnHeader3.Width);
}
listview.EndUpdate();
}