Witam!
Mam taki problem. Otóż napisałem taki kod, którego za nic nie mogę uruchomić. Tak czy siak wywala błąd a kod jet poprawny.
#include <Windows.h>
HINSTANCE hInst; //global handle to hold the application instance
HWND wndHandle; //global variable to hold the window handle
//initWindow registers the window class for the application, creates the window
LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);
bool initWindow(HINSTANCE hInstance)
{
WNDCLASSEX wcex;
//Fill in the WNDCLASSEX structure. This describes how the window will look to the system
wcex.cbSize = sizeof(WNDCLASSEX); //the size of the structure
wcex.style = CS_HREDRAW | CS_VREDRAW; //the class style
wcex.lpfnWndProc = (WNDPROC)WndProc; //the window procedure callback
wcex.cbClsExtra = 0; //extra bytes to allocate for this class
wcex.cbWndExtra = 0; //extra bytes to allocate for this instance
wcex.hInstance = hInstance; //handle to the application instance
wcex.hIcon = 0; //icon to associate with the application
wcex.hCursor = LoadCursor(NULL, IDC_ARROW); //the default cursor
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1); //the background color
wcex.lpszMenuName = NULL; //the resource name for the menu
wcex.lpszClassName = "DirectXExample"; //the class name being created
wcex.hIconSm = 0; //the handle to the small icon
RegisterClassEx(&wcex);
//Create the window
wndHandle = CreateWindow(
"DirectXExample", //the window class to use
"DirectXExample", //the title bar text
WS_OVERLAPPEDWINDOW, //the window style
CW_USEDEFAULT, //the starting x coordinate
CW_USEDEFAULT, //the starting y coordinate
640, //the pixel width of the window
480, //the pixel height of the window
NULL, //the parent window; NULL for desktop
NULL, //the menu for the application; NULL for none
hInstance, //the handle to the application instance
NULL); //no values passed to the window
//Make sure that the window handle that is created is valid
if(!wndHandle)
return false;
//Display the window on the screen
ShowWindow(wndHandle, SW_SHOW);
UpdateWindow(wndHandle);
return true;
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow)
{
//Initialize the window
/* if(!initWindow(hInstance))
return false;*/
// Main message loop
MSG msg;
ZeroMemory(&msg,sizeof(msg));
while(msg.message!=WM_QUIT)
{
//Check the message queue
while(GetMessage(&msg, wndHandle, 0, 0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
return (int) msg.wParam;
}
No i błąd:
1>------ Build started: Project: example1poprawka, Configuration: Debug Win32 ------
1> winmain.cpp
1>winmain.obj : error LNK2019: unresolved external symbol "long __stdcall WndProc(struct HWND__ *,unsigned int,unsigned int,long)" (?WndProc@@YGJPAUHWND__@@IIJ@Z) referenced in function "bool __cdecl initWindow(struct HINSTANCE__ *)" (?initWindow@@YA_NPAUHINSTANCE__@@@Z)
1>c:\users\łukasz\documents\visual studio 2010\Projects\example1poprawka\Debug\example1poprawka.exe : fatal error LNK1120: 1 unresolved externals
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
Ktoś wie o co chodzi? Dodam, że zmieniałem kodowanie projektu z Unicode na Multi-Byte. Przy ustawieniu na Unicode sprawa wygląda tak:
1>------ Build started: Project: example1poprawka, Configuration: Debug Win32 ------
1> winmain.cpp
1>c:\users\łukasz\documents\visual studio 2010\projects\example1poprawka\example1poprawka\winmain.cpp(23): error C2440: '=' : cannot convert from 'const char [15]' to 'LPCWSTR'
1> Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
1>c:\users\łukasz\documents\visual studio 2010\projects\example1poprawka\example1poprawka\winmain.cpp(40): error C2664: 'CreateWindowExW' : cannot convert parameter 2 from 'const char [15]' to 'LPCWSTR'
1> Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
1>c:\users\łukasz\documents\visual studio 2010\projects\example1poprawka\example1poprawka\winmain.cpp(54): error C2731: 'WinMain' : function cannot be overloaded
1> c:\users\łukasz\documents\visual studio 2010\projects\example1poprawka\example1poprawka\winmain.cpp(53) : see declaration of 'WinMain'
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
Nie wiem co dalej robić...
