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大家帮小弟看一下,这段入门的API程序,执行之后总是提示
error LNK2001: unresolved external symbol _main
1 unresolved externals
难道我哪语义出错误了。- #include <windows.h>
- /* Declare Windows procedure */
- LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);
- /* Make the class name into a global variable */
- char szClassName[ ] = "WindowsApp";
- int WINAPI WinMain (HINSTANCE hThisInstance,
- HINSTANCE hPrevInstance,
- LPSTR lpszArgument,
- int nFunsterStil)
- {
- HWND hwnd,hwndButton; /* This is the handle for our window */
- MSG messages; /* Here messages to the application are saved */
- WNDCLASSEX wincl; /* Data structure for the windowclass */
- /* The Window structure */
- wincl.hInstance = hThisInstance;
- wincl.lpszClassName = szClassName;
- wincl.lpfnWndProc = WindowProcedure; /* This function is called by windows */
- wincl.style = CS_DBLCLKS; /* Catch double-clicks */
- wincl.cbSize = sizeof (WNDCLASSEX);
- /* Use default icon and mouse-pointer */
- wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
- wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
- wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
- wincl.lpszMenuName = NULL; /* No menu */
- wincl.cbClsExtra = 0; /* No extra bytes after the window class */
- wincl.cbWndExtra = 0; /* structure or the window instance */
- /* Use Windows's default color as the background of the window */
- wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;
- /* Register the window class, and if it fails quit the program */
- if (!RegisterClassEx (&wincl))
- return 0;
- /* The class is registered, let's create the program*/
- hwnd = CreateWindowEx (
- 0, /* Extended possibilites for variation */
- szClassName, /* Classname */
- "Windows App", /* Title Text */
- WS_OVERLAPPEDWINDOW, /* default window */
- CW_USEDEFAULT, /* Windows decides the position */
- CW_USEDEFAULT, /* where the window ends up on the screen */
- 544, /* The programs width */
- 375, /* and height in pixels */
- HWND_DESKTOP, /* The window is a child-window to desktop */
- NULL, /* No menu */
- hThisInstance, /* Program Instance handler */
- NULL /* No Window Creation data */
- );
- /* Make the window visible on the screen */
- ShowWindow (hwnd, nFunsterStil);
- //
- hwndButton = CreateWindow(
- "BUTTON", // predefined class
- "OK", // button text
- WS_VISIBLE | WS_CHILD | BS_DEFPUSHBUTTON, // styles
- // Size and position values are given explicitly, because
- // the CW_USEDEFAULT constant gives zero values for buttons.
- 30, // starting x position
- 40, // starting y position
- 100, // button width
- 100, // button height
- hwnd, // parent window
- NULL, // No menu
- hThisInstance,
- NULL);
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- /* Run the message loop. It will run until GetMessage() returns 0 */
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- while (GetMessage (&messages, NULL, 0, 0))
- {
- /* Translate virtual-key messages into character messages */
- TranslateMessage(&messages);
- /* Send message to WindowProcedure */
- DispatchMessage(&messages);
- }
- /* The program return-value is 0 - The value that PostQuitMessage() gave */
- return messages.wParam;
- }
- /* This function is called by the Windows function DispatchMessage() */
- LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
- {
- switch (message) /* handle the messages */
- {
- case WM_DESTROY:
- PostQuitMessage (0); /* send a WM_QUIT to the message queue */
- break;
- default: /* for messages that we don't deal with */
- return DefWindowProc (hwnd, message, wParam, lParam);
- }
- return 0;
- }
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