I am trying to make a function find a window handle. I have done this many times before the following way:
HWND windowHandle
windowHandle = FindWindow(NULL, "NameOfWindowIAmLookingFor");
However, I then tried to do the following:
string myString = "NameOfWindowIAmLookingFor";
HWND windowHandle
windowHandle = FindWindow(NULL, myString);
and the following error comes up:
error: cannot convert 'std::string {aka std::basic_string<char>)' to 'LPCSTR {aka const char*} ' for argument '2' to 'HWND__* FindWindowA(LPCSTR, LPCSTR)';
I have another function that is giving myString a value, so I want to pass that value as a variable to the FindWindow() function, but this error is coming up and I dont understand what is happening.
Question:: Why am I getting this error and how can I go about putting a string variable into the FindWindow() function?
Why am I getting this error and how can I go about putting a string variable into the FindWindow() function?
The compiler error message is pretty clear. The FindWindow() function expects a const char* as second parameter, which std::string isn't.
To get a (const) pointer to the raw char array data managed by a std::string instance use the c_str() method:
FindWindow(NULL, myString.c_str());
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