C++

Forum

 
Process::Kill()

Pages: 12
Chrisaster (23)
I'm having some problems learning how to use this function..

I've managed Process Start (Process::Start(textbox1->Text);) but Process Kill will not work.

When I try Process::Kill(textBox2->Text) - Textbox 2 being the process name, I get the error "Function does not accept 1 arguments!". Does anyone know how I can get this to work? :\

I am a newbie at C++ btw. :)
Last edited on
MacG (33)
Is this standard c++ or part of .net System.Diagnostics?
Chrisaster (23)
System Diagnostics. Sorry should of mentioned that.
MacG (33)
Ok, never used this part myself, but according to documentation of .net you should start a process by

Process^ myProcess = gcnew Process

fill the startinfo structure

myProcess->StartInfo->FileName =

and start the process with

myProcess->Start();

Since "Process" is a Type just like "String" or "Integer"
--you cant write something like String.Length() or Process.Kill().

According to documentation kill() has no parameters, thus implying its a method of any creatated process.
So to kill myprocess should be

myprocess->kill()
or
myprocess.kill()

But as I said I never used System.Diagnostics so this is only a guess as to what could be the problem.
Last edited on
Chrisaster (23)
I'm getting this error:

An unhandled exception of type 'System.InvalidOperationException' occurred in System.dll

Additional information: No process is associated with this object.
MacG (33)
You mean for example you run notepad.exe and you write "notepad.exe" in the textbox2 field of your killapp.exe to terminate it? something like this?
Chrisaster (23)
Yes, or run notepad.exe and then kill explorer.exe (For whatever reason 8) )
MacG (33)
Ok, you have to do a few tasks to accomplish that.
First of all, you can't kill a process by its name. Why? because you can have multiple processes with exactly the same name.
You have to kill processes by their id, 'cause this part is unique for every process.
So at first, you have to determine the id of any process you want to kill.
so if you want to kill notepad.exe you have to get the id (or ids) of any process named notepad.exe.
then you either kill every process with this name or display the id for the found processes and let the user choose which one to kill.
Well, since the user wouldn't know which pid belongs to what instance you should simply kill all apps (processes) with the given name.

As I said before I never used System.diagnostics but it seems like kill won't do for you.

TerminateProcess seems to be able to do what you want.
Last edited on
MacG (33)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
 
std::vector<DWORD> SetOfPID;
GetProcessID("example.exe",SetOfPID);   // get all process id's of example.exe


if (SetOfPID.empty())   // Process is not running
{
    printf("Process is not running\n");   // Or do nothing as you wish.
}
else    // Process is running
{
    for (int i=0;i < SetOfPID.size(); i++)
    {
        printf("Process ID is %d\n", SetOfPID[i]);
        HANDLE hProcess = OpenProcess(
             PROCESS_ALL_ACCESS,FALSE,SetOfPID[i]);  // get Handles for every found process.
        TerminateProcess (hProcess, 0);     // Should kill the Process with exitcode 0
        CloseHandle(hProcess);
    }
}


TerminateProcess() and OpenProcess() should be defined in Windows.h
Last edited on
MacG (33)
another solution would be this:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
 
#include <windows.h>
#include <tlhelp32.h>
#include <stdio.h>

BOOL KillProcessByName(char *szProcessToKill);

int main(int argc, char* argv[]){
	if(argc > 1){
		KillProcessByName(argv[1]);
	}else{
		//KillProcessByName("notepad.exe");
	}
	return 0;
}

BOOL KillProcessByName(char *szProcessToKill){
	HANDLE hProcessSnap;
	HANDLE hProcess;
	PROCESSENTRY32 pe32;
	DWORD dwPriorityClass;

	hProcessSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);  // Takes a snapshot of all the processes

	if(hProcessSnap == INVALID_HANDLE_VALUE){
		return( FALSE );
	}

	pe32.dwSize = sizeof(PROCESSENTRY32);

	if(!Process32First(hProcessSnap, &pe32)){
		CloseHandle(hProcessSnap);     
		return( FALSE );
	}

	do{
		if(!strcmp(pe32.szExeFile,szProcessToKill)){    //  checks if process at current position has the name of to be killed app
			hProcess = OpenProcess(PROCESS_TERMINATE,0, pe32.th32ProcessID);  // gets handle to process
			TerminateProcess(hProcess,0);   // Terminate process by handle
			CloseHandle(hProcess);  // close the handle
		} 
	}while(Process32Next(hProcessSnap,&pe32));  // gets next member of snapshot

	CloseHandle(hProcessSnap);  // closes the snapshot handle
	return( TRUE );
}


It even compiles with mingw. Produces a executable which takes the name of the to app to be killed.

Or if using xp simply make a execute call to taskkill.

execl("taskkill.exe", "taskkill", "/F", "/IM", "example.exe", 0);
Last edited on
Chrisaster (23)
Ok, i am really confused, where am i meant to fit this into a windows forms application?

This is where i want to put the code:

1
2
3
4
5
6
 
private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {
			//code for opening 
		 }
private: System::Void button2_Click(System::Object^  sender, System::EventArgs^  e) {
			//code for killing
		 }


Sorry if i am being noobish :P
Last edited on
MacG (33)
Don't be sorry, every walk begins with just one singl step.
Ok, first of all I'm sorry. I forgot that TextBox->text is of type system::string
while KillProcessByName expects a char*, so there is a function missing for converting system::string to char*
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
 
#include <some includes here>
#define maybe some definitions here

using namespace what ever namespace you need // you also can also omit this line

#your class starts here
...
#declare methods at begin
private: char* string_to_charptr(String^ in){

	char *out = (char*)calloc(in->Length, sizeof(char));

	for(int i = 0; i < in->Length; i++){
		out += in[i];
	}

	return out;
}

private: bool KillProcessByName(char *szProcessToKill){
... see above
}

private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {
			Process::Start(textbox1->Text);  //  Works, takes the text from TextBox1->Text as startinfo.filename
		 }
private: System::Void button2_Click(System::Object^  sender, System::EventArgs^  e) {
			KillProcessByName(string_to_charptr(textBox2->Text));		 }
Last edited on
Chrisaster (23)
I guess i'm missing an include due to all these errors:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
 
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(79) : error C2065: 'HANDLE' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(79) : error C2146: syntax error : missing ';' before identifier 'hProcessSnap'
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(79) : error C2065: 'hProcessSnap' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(80) : error C2065: 'HANDLE' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(80) : error C2146: syntax error : missing ';' before identifier 'hProcess'
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(80) : error C2065: 'hProcess' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(81) : error C2065: 'PROCESSENTRY32' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(81) : error C2146: syntax error : missing ';' before identifier 'pe32'
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(81) : error C2065: 'pe32' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(82) : error C2065: 'DWORD' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(82) : error C2146: syntax error : missing ';' before identifier 'dwPriorityClass'
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(82) : error C2065: 'dwPriorityClass' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(84) : error C2065: 'hProcessSnap' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(84) : error C2065: 'TH32CS_SNAPPROCESS' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(84) : error C3861: 'CreateToolhelp32Snapshot': identifier not found
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(86) : error C2065: 'hProcessSnap' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(86) : error C2065: 'INVALID_HANDLE_VALUE' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(87) : error C2065: 'FALSE' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(90) : error C2065: 'pe32' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(90) : error C2228: left of '.dwSize' must have class/struct/union
1>        type is ''unknown-type''
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(90) : error C2065: 'PROCESSENTRY32' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(90) : error C2070: ''unknown-type'': illegal sizeof operand
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(92) : error C2065: 'hProcessSnap' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(92) : error C2065: 'pe32' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(92) : error C3861: 'Process32First': identifier not found
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(93) : error C2065: 'hProcessSnap' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(93) : error C3861: 'CloseHandle': identifier not found
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(94) : error C2065: 'FALSE' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(98) : error C2065: 'pe32' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(98) : error C2228: left of '.szExeFile' must have class/struct/union
1>        type is ''unknown-type''
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(98) : error C3861: 'strcmp': identifier not found
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(99) : error C2065: 'hProcess' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(99) : error C2065: 'PROCESS_TERMINATE' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(99) : error C2065: 'pe32' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(99) : error C2228: left of '.th32ProcessID' must have class/struct/union
1>        type is ''unknown-type''
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(99) : error C3861: 'OpenProcess': identifier not found
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(100) : error C2065: 'hProcess' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(100) : error C3861: 'TerminateProcess': identifier not found
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(101) : error C2065: 'hProcess' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(101) : error C3861: 'CloseHandle': identifier not found
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(103) : error C2065: 'hProcessSnap' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(103) : error C2065: 'pe32' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(103) : error C3861: 'Process32Next': identifier not found
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(105) : error C2065: 'hProcessSnap' : undeclared identifier
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(105) : error C3861: 'CloseHandle': identifier not found
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(106) : error C2065: 'TRUE' : undeclared identifier



If so, can i have the include name? :)
Last edited on
Chrisaster (23)
And to save future posts, incase it isn't an include, here is the whole code for the form 1 header file:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
 
#pragma once


namespace ProcessMan {

	using namespace System;
	using namespace System::ComponentModel;
	using namespace System::Collections;
	using namespace System::Windows::Forms;
	using namespace System::Data;
	using namespace System::Drawing;
	using namespace System::Diagnostics;





	/// <summary>
	/// Summary for Form1
	///
	/// WARNING: If you change the name of this class, you will need to change the
	///          'Resource File Name' property for the managed resource compiler tool
	///          associated with all .resx files this class depends on.  Otherwise,
	///          the designers will not be able to interact properly with localized
	///          resources associated with this form.
	/// </summary>
	public ref class Form1 : public System::Windows::Forms::Form
	{
	public:
		Form1(void)
		{
			InitializeComponent();
			//
			//TODO: Add the constructor code here
			//
		}

	protected:
		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		~Form1()
		{
			if (components)
			{
				delete components;
			}
		}



	private: System::Windows::Forms::Button^  button1;


	private: System::Windows::Forms::TextBox^  textBox1;
	private: System::Windows::Forms::TextBox^  textBox2;
	private: System::Windows::Forms::Button^  button2;



				
	private: System::ComponentModel::IContainer^  components;
	protected: 

		/// <summary>
		/// Required designer variable.
		/// </summary>

		private: bool KillProcessByName(char *szProcessToKill){
				HANDLE hProcessSnap;
	HANDLE hProcess;
	PROCESSENTRY32 pe32;
	DWORD dwPriorityClass;

	hProcessSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);  // Takes a snapshot of all the processes

	if(hProcessSnap == INVALID_HANDLE_VALUE){
		return( FALSE );
	}

	pe32.dwSize = sizeof(PROCESSENTRY32);

	if(!Process32First(hProcessSnap, &pe32)){
		CloseHandle(hProcessSnap);     
		return( FALSE );
	}

	do{
		if(!strcmp(pe32.szExeFile,szProcessToKill)){    //  checks if process at current position has the name of to be killed app
			hProcess = OpenProcess(PROCESS_TERMINATE,0, pe32.th32ProcessID);  // gets handle to process
			TerminateProcess(hProcess,0);   // Terminate process by handle
			CloseHandle(hProcess);  // close the handle
		} 
	}while(Process32Next(hProcessSnap,&pe32));  // gets next member of snapshot

	CloseHandle(hProcessSnap);  // closes the snapshot handle
	return( TRUE );

			}


#pragma region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		virtual void InitializeComponent(void)  
		{
			System::ComponentModel::ComponentResourceManager^  resources = (gcnew System::ComponentModel::ComponentResourceManager(Form1::typeid));
			this->button1 = (gcnew System::Windows::Forms::Button());
			this->textBox1 = (gcnew System::Windows::Forms::TextBox());
			this->textBox2 = (gcnew System::Windows::Forms::TextBox());
			this->button2 = (gcnew System::Windows::Forms::Button());
			this->SuspendLayout();
			// 
			// button1
			// 
			this->button1->Font = (gcnew System::Drawing::Font(L"Tahoma", 8.25F, System::Drawing::FontStyle::Regular, System::Drawing::GraphicsUnit::Point, 
				static_cast<System::Byte>(0)));
			this->button1->Location = System::Drawing::Point(12, 22);
			this->button1->Name = L"button1";
			this->button1->Size = System::Drawing::Size(89, 25);
			this->button1->TabIndex = 3;
			this->button1->Text = L"Start";
			this->button1->UseVisualStyleBackColor = true;
			this->button1->Click += gcnew System::EventHandler(this, &Form1::button1_Click);
			// 
			// textBox1
			// 
			this->textBox1->Font = (gcnew System::Drawing::Font(L"Verdana", 8.25F, System::Drawing::FontStyle::Regular, System::Drawing::GraphicsUnit::Point, 
				static_cast<System::Byte>(0)));
			this->textBox1->Location = System::Drawing::Point(107, 24);
			this->textBox1->Name = L"textBox1";
			this->textBox1->Size = System::Drawing::Size(138, 21);
			this->textBox1->TabIndex = 6;
			this->textBox1->Text = L"Enter file path";
			// 
			// textBox2
			// 
			this->textBox2->Font = (gcnew System::Drawing::Font(L"Verdana", 8.25F, System::Drawing::FontStyle::Regular, System::Drawing::GraphicsUnit::Point, 
				static_cast<System::Byte>(0)));
			this->textBox2->Location = System::Drawing::Point(107, 63);
			this->textBox2->Name = L"textBox2";
			this->textBox2->Size = System::Drawing::Size(138, 21);
			this->textBox2->TabIndex = 7;
			this->textBox2->Text = L"Enter process name";
			// 
			// button2
			// 
			this->button2->Font = (gcnew System::Drawing::Font(L"Tahoma", 8.25F, System::Drawing::FontStyle::Regular, System::Drawing::GraphicsUnit::Point, 
				static_cast<System::Byte>(0)));
			this->button2->Location = System::Drawing::Point(12, 61);
			this->button2->Name = L"button2";
			this->button2->RightToLeft = System::Windows::Forms::RightToLeft::No;
			this->button2->Size = System::Drawing::Size(89, 25);
			this->button2->TabIndex = 8;
			this->button2->Text = L"Terminate";
			this->button2->UseVisualStyleBackColor = true;
			this->button2->Click += gcnew System::EventHandler(this, &Form1::button2_Click);
			// 
			// Form1
			// 
			this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
			this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
			this->ClientSize = System::Drawing::Size(257, 111);
			this->Controls->Add(this->button2);
			this->Controls->Add(this->textBox2);
			this->Controls->Add(this->textBox1);
			this->Controls->Add(this->button1);
			this->Icon = (cli::safe_cast<System::Drawing::Icon^  >(resources->GetObject(L"$this.Icon")));
			this->Name = L"Form1";
			this->Text = L"Process Manager";
			this->ResumeLayout(false);
			this->PerformLayout();
		}
#pragma endregion
	private: System::Void toolStripButton1_Click(System::Object^  sender, System::EventArgs^  e) {

			 }
private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {
			Process^ myProcess = gcnew Process;
			myProcess->StartInfo->FileName = textBox1->Text;
			myProcess->Start();
		 }
private: System::Void button2_Click(System::Object^  sender, System::EventArgs^  e) {
			//Process^ myKiller = gcnew Process;
			//myKiller->StartInfo->FileName = textBox2->Text;
			//myKiller->Kill();
		}
	};
}
MacG (33)
Try to have these:
1
2
3
 
#include <windows.h>
#include <tlhelp32.h>
#include <stdio.h>

between #prgma and namespace
Last edited on
Chrisaster (23)
Well i'm glad to say that reduced the errors by about 15, now i just have these left:

1
2
3
 
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(92) : error C2664: 'strcmp' : cannot convert parameter 1 from 'WCHAR [260]' to 'const char *'
1>        Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(189) : error C3861: 'string_to_charptr': identifier not found
MacG (33)
ok error C3861: 'string_to_charptr': identifier not found is clear.
You have no function with the name string_to_charptr in your code.
1
2
3
4
5
6
7
8
9
10
 
private: char* string_to_charptr(String^ in){

	char *out = (char*)calloc(in->Length, sizeof(char));

	for(int i = 0; i < in->Length; i++){
		out += in[i];
	}

	return out;
}


AS for error C2664: 'strcmp' : cannot convert parameter 1 from 'WCHAR [260]' to 'const char *'

you have an wchar and try to compare it to a char, something strcmp() isn't capale of. strcmp() tries to compare a two byte variable with a one byte variable which can work under no condition.

Thats why I put the string_to_charptr() function there. It converts the string into char*
MacG (33)
Im not quite sure if the String class of microsofts .net is implemented like the standard c++ string class, but if it is you could also try using

1
2
3
4
 
char* appname;
appname = new char [textBox2->Text.size()+1];
strcpy(appname , textBox2->Text.c_str());
KillProcessByName(appname );


then you wouldn't not need the string_to_charptr() function.
Last edited on
Chrisaster (23)
Well i'm sure your curious so here are the results to your last post:

1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(103) : error C2664: 'strcmp' : cannot convert parameter 1 from 'WCHAR [260]' to 'const char *'
1> Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
1>e:\documents and settings\chris\my documents\visual studio 2008\projects\processman\processman\Form1.h(198) : error C2228: left of '.c_str' must have class/struct/union
1> type is 'System::String ^'
1> did you intend to use '->' instead?


However "Thats why I put the string_to_charptr() function there. It converts the string into char*" . I don't understand.. I used that function and converted the string? Unless you are talking about converting something else. (I have used it here like you said: "KillProcessByName(string_to_charptr(textBox2->Text));")

Last edited on
MacG (33)
Ok, as I though, microsofts .net string has no c_str() method.
but I don't understand why string_to_charptr seems to return wchar.

Could you post your source again as it is now?

Instead of strcmp() you could try to use wcscmp() which compares two wide characters.
Last edited on
Pages: 12