string to LPVOID

[q139]

Hello,
I have problem converting string to lpvoid.
It does convert but if input is "0x00309E40" output 0x13db92cc

 std::string adresss = "0x";
 std::string ii = ui->lineEdit->text().toStdString();
                  adresss += ii;
  LPVOID adr = (LPVOID)adresss.c_str();

I am using Qt 5.

[cire]

There is no input or output here.

You should not store the address returned by string::c_str. (And that address should certainly not be equal to whatever text is contained in the string address.)

[helios]

It seems what OP wants is more like

intptr_t int_address;
{
    std::stringstream stream;
    stream <<std::hex<<ui->lineEdit->text().toStdString();
    stream >>int_address;
}
void *address = (void *)int_address;

[q139]

Sorry for wrong termins.
By input i mean if string to convert is "0x00309E40" then converted lpvoid is 0x13db92cc.
How could i convert input from ui->lineEdit->text() to proper format for adress lpvoid?

ReadProcessMemory(hProc, (LPVOID)THIS, (LPVOID) &cbuffer, length1, 0); }

I tryed above code and compiler returned:
error: aggregate 'std::stringstream stream' has incomplete type and cannot be defined
std::stringstream stream;
^

If i put
std::string ii = "0x00309E40";
(LPVOID)&ii
Then code compiles but wont work, if i enter lpvoid manually it works.

[Peter87]

To use the code that helios posted you have to include <sstream>

[q139]

Thanks alot, now i am able to enter adress and pointer.

Now i have problem converting qstring to LPCWSTR.

 wchar_t win = ui->lineEdit->text()::toWCharArray(); //how to convert it properly?
HWND hWnd = FindWindow (0,  win);

 HWND hWnd = FindWindow (0, ui->lineEdit->text()::toWCharArray());
   

compiler says
error: cannot convert 'QString' to 'LPCWSTR {aka const wchar_t*}' for argument '2' to 'HWND__* FindWindowW(LPCWSTR, LPCWSTR)'
HWND hWnd = FindWindow (0, ui->lineEdit->text()::toWCharArray());
^

it works this way
HWND hWnd = FindWindow (0, L"app";