C / C++ / MFC

1-Jul-03 0:06

Hello,

how can i start another app from my application? After this i like to call the F4 Button?

Thanks in advance, Mark

User 66581-Jul-03 0:15

User 6658

1-Jul-03 0:15

ShellExecute() to start the other exe. To send a keystroke you might SendMessage(WM_KEYDOWN, ...) to the other application.

modified 12-Sep-18 21:01pm.

Ryan Binns1-Jul-03 0:17

Ryan Binns

1-Jul-03 0:17

The simplest way is to use ShellExecute().

ShellExecute(NULL, NULL, _T("myprog.exe"), NULL, SW_SHOWNORMAL);

Look at the docs on ShellExecute() to find out what the parameters do and how to use them. To find out whether it is successful or not, ShellExecute() returns a value >32 if it is successful, and <=32 if it is not.

Hope this helps,

Ryan

Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2^nd April 2003, The Lounge)

Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late - John Nichol "Point Of Impact"

Dominik Reichl1-Jul-03 0:18

Dominik Reichl

1-Jul-03 0:18

macmac38 wrote:
how can i start another app from my application?

BOOL CreateProcess(
  LPCTSTR lpApplicationName,
                         // pointer to name of executable module
  LPTSTR lpCommandLine,  // pointer to command line string
  LPSECURITY_ATTRIBUTES lpProcessAttributes,  // process security attributes
  LPSECURITY_ATTRIBUTES lpThreadAttributes,   // thread security attributes
  BOOL bInheritHandles,  // handle inheritance flag
  DWORD dwCreationFlags, // creation flags
  LPVOID lpEnvironment,  // pointer to new environment block
  LPCTSTR lpCurrentDirectory,   // pointer to current directory name
  LPSTARTUPINFO lpStartupInfo,  // pointer to STARTUPINFO
  LPPROCESS_INFORMATION lpProcessInformation  // pointer to PROCESS_INFORMATION
);

macmac38 wrote:
After this i like to call the F4 Button?

You want to call the F4 button? I'm not sure what you mean... You can kill the process using the TerminateProcess function (you got the handle from CreateProcess). If you want to simulate a press to F4 you can use the SendInput or keybd_event functions.

-Dominik

_outp(0x64, 0xAD);
and
__asm mov al, 0xAD __asm out 0x64, al
do the same... but what do they do??

macmac381-Jul-03 1:12

1-Jul-03 1:12

Yep, i can call the .exe now when i press a button in my app. What i like to do is to simulate the pressing of F4 after this.

Because this starts a macro in the opened .exe.

I cannot understand the help for these functions you gave me and do not know which code to use for F4(Hardwareadress, number..???)

Do u have a code snip?

Thanks, Mark

User 66581-Jul-03 1:16

User 6658

1-Jul-03 1:16

SendMessage(wndOfStartedApp, WM_KEYDOWN, VK_F4, 0);

The first parameter is the HWND of the app you just started.
Instead of WM_KEYDOWN you might also try WM_KEYUP.

modified 12-Sep-18 21:01pm.

macmac381-Jul-03 1:56

1-Jul-03 1:56

mmh, i use NULL for HWND when i start the app. Nothing happens..

Thanks, Mark

Joan M1-Jul-03 3:21

Joan M

1-Jul-03 3:21

It is normal:

the HWND defines which window will receive the message, then if you send the KeyPress to a null window...

you should start your app, then find the window of that app and after that send the message there...

I think that you can also do it better, and in order to do so, you should take a look at CreateProcess(...).

hope this helps.

macmac381-Jul-03 4:40

1-Jul-03 4:40

But how can i find the window of that app? It is a commercial one. By the way i think i have to wait till the app is up before i send the message there?

Thanks, Mark

Directx and the VC++ .NET environment

basementman1-Jul-03 5:52

basementman

1-Jul-03 5:52

If you launch it by using the CreateProcess api, one of the parameters is a PROCESS_INFORMATION structure. This gets filled in with the THREAD HANDLE of the primary thread for the newly lauched app. After the CreateProcess call returns, wait for the app to initialize by calling WaitForInputIdle(). When this returns, then you should be able to simulate a keystroke with the PostThreadMessage api, passing the new app's main thread handle as the parameter.

Good Luck!

onwards and upwards...

JamesLaing30-Jun-03 23:17

JamesLaing

30-Jun-03 23:17

Hi.

Does anyone know if there is a DirectX application wizard for use with the VC++ .NET version.
I am looking for something similar to the app wizard that is available for use under VC++ 6 ?.

Thanks.
James

Delete All folder and its contents

rohit.dhamija30-Jun-03 22:54

rohit.dhamija

30-Jun-03 22:54

;PDear All,
Is there any API which may simulate Deltree command.

I am developing a application for Windows 2000/NT/XP in which i want to remove all contents of a given folder .

Or any alternate way to achieve the same ?

Thanks
Rohit

Ryan Binns30-Jun-03 23:06

Ryan Binns

30-Jun-03 23:06

Rohit Divas wrote:
Or any alternate way to achieve the same ?

Yes. You'll have to recursively go through the folders, delete each file, and then finally delete the folder. Of course, if a folder contains subfolders, then you'll need to go through that folder and delete all the files and subfolders in it etc., hence the recurson.

Ryan

Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2^nd April 2003, The Lounge)

Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late - John Nichol "Point Of Impact"

Anonymous30-Jun-03 23:08

Anonymous

30-Jun-03 23:08

try this:

#include <string><br />
#include <iostream><br />
<br />
#include <conio.h><br />
<br />
<br />
int DeleteDirectory(const std::string &refcstrRootDirectory)<br />
{<br />
  std::string     strFilePath;           // Path of file<br />
  std::string     strPattern;            // Pattern<br />
  HANDLE          hFile;                 // Handle to file<br />
  WIN32_FIND_DATA FileInformation;       // File information<br />
<br />
<br />
  strPattern = refcstrRootDirectory + "\*.*";<br />
  hFile = ::FindFirstFile(strPattern.c_str(), &FileInformation);<br />
  if(hFile != INVALID_HANDLE_VALUE)<br />
  {<br />
    do<br />
    {<br />
      if(FileInformation.cFileName[0] != '.')<br />
      {<br />
        strFilePath.erase();<br />
        strFilePath = refcstrRootDirectory + "\" + FileInformation.cFileName;<br />
<br />
        if(FileInformation.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)<br />
        {<br />
          // Delete subdirectory<br />
          int iRC = DeleteDirectory(strFilePath);<br />
          if(iRC)<br />
            return iRC;<br />
        }<br />
        else<br />
        {<br />
          // Set file attributes<br />
          if(::SetFileAttributes(strFilePath.c_str(),<br />
                                 FILE_ATTRIBUTE_NORMAL) == FALSE)<br />
            return ::GetLastError();<br />
<br />
          // Delete file<br />
          if(:eleteFile(strFilePath.c_str()) == FALSE)<br />
            return ::GetLastError();<br />
        }<br />
      }<br />
    } while(::FindNextFile(hFile, &FileInformation) == TRUE);<br />
<br />
    // Close handle<br />
    ::FindClose(hFile);<br />
<br />
    DWORD dwError = ::GetLastError();<br />
    if(dwError != ERROR_NO_MORE_FILES)<br />
      return dwError;<br />
    else<br />
    {<br />
      // Set directory attributes<br />
      if(::SetFileAttributes(refcstrRootDirectory.c_str(),<br />
                             FILE_ATTRIBUTE_NORMAL) == FALSE)<br />
        return ::GetLastError();<br />
<br />
      // Delete directory<br />
      if(::RemoveDirectory(refcstrRootDirectory.c_str()) == FALSE)<br />
        return ::GetLastError();<br />
    }<br />
  }<br />
<br />
  return 0;<br />
}<br />
<br />
<br />
int main()<br />
{<br />
  std::string strDirectoryToDelete = "c:mydir";<br />
<br />
  // Delete 'c:mydir' and its subdirectories<br />
  int iRC = DeleteDirectory(strDirectoryToDelete);<br />
  if(iRC)<br />
  {<br />
    std::cout << "Error " << iRC << endl;<br />
    return -1;<br />
  }<br />
<br />
  // Wait for keystroke<br />
  _getch();<br />
<br />
  return 0;<br />
}

Rickard Andersson²⁰30-Jun-03 23:13

Rickard Andersson²⁰

30-Jun-03 23:13

SHFileOperation() will help you!

Rickard Andersson
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