问一个C++方面的问题.聪明的你请进!!
在C++中, "MFC"是什么？
能不能给我个实例看看．并说一说这个实例是干什么的？
帮我解决了这个问题，我就给你加分！！！
参考答案:Windows API程序：
#include <windows.h>
LONG WINAPI WndProc (HWND, UINT, WPARAM, LPARAM);
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPSTR lpszCmdLine, int nCmdShow)
{
WNDCLASS wc;
HWND hwnd;
MSG msg;
wc.style = 0; // Class style
wc.lpfnWndProc = (WNDPROC) WndProc; // Window procedure address
wc.cbClsExtra = 0; // Class extra bytes
wc.cbWndExtra = 0; // Window extra bytes
wc.hInstance = hInstance; // Instance handle
wc.hIcon = LoadIcon (NULL, IDI_WINLOGO); // Icon handle
wc.hCursor = LoadCursor (NULL, IDC_ARROW); // Cursor handle
wc.hbrBackground = (HBRUSH) (COLOR_WINDOW + 1); // Background color
wc.lpszMenuName = NULL; // Menu name
wc.lpszClassName = "MyWndClass"; // WNDCLASS name
RegisterClass (&wc);
hwnd = CreateWindow (
"MyWndClass", // WNDCLASS name
"SDK Application", // Window title
WS_OVERLAPPEDWINDOW, // Window style
CW_USEDEFAULT, // Horizontal position
CW_USEDEFAULT, // Vertical position
CW_USEDEFAULT, // Initial width
CW_USEDEFAULT, // Initial height
HWND_DESKTOP, // Handle of parent window
NULL, // Menu handle
hInstance, // Application's instance handle
NULL // Window-creation data
);
ShowWindow (hwnd, nCmdShow);
UpdateWindow (hwnd);
while (GetMessage (&msg, NULL, 0, 0)) {
TranslateMessage (&msg);
DispatchMessage (&msg);
}
return msg.wParam;
}
LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam,
LPARAM lParam)
{
PAINTSTRUCT ps;
HDC hdc;
switch (message) {
case WM_PAINT:
hdc = BeginPaint (hwnd, &ps);
Ellipse (hdc, 0, 0, 200, 100);
EndPaint (hwnd, &ps);
return 0;
case WM_DESTROY:
PostQuitMessage (0);
return 0;
}
return DefWindowProc (hwnd, message, wParam, lParam);
}
简单的MFC程序
Hello.h
class CMyApp : public CWinApp
{
public:
virtual BOOL InitInstance ();
};
class CMainWindow : public CFrameWnd
{
public:
CMainWindow ();
protected:
afx_msg void OnPaint ();
DECLARE_MESSAGE_MAP ()
};
Hello.cpp
#include <afxwin.h>
#include "Hello.h"
CMyApp myApp;
/////////////////////////////////////////////////////////////////////////
// CMyApp member functions
BOOL CMyApp::InitInstance ()
{
m_pMainWnd = new CMainWindow;
m_pMainWnd->ShowWindow (m_nCmdShow);
m_pMainWnd->UpdateWindow ();
return TRUE;
}
/////////////////////////////////////////////////////////////////////////
// CMainWindow message map and member functions
BEGIN_MESSAGE_MAP (CMainWindow, CFrameWnd)
ON_WM_PAINT ()
END_MESSAGE_MAP ()
CMainWindow::CMainWindow ()
{
Create (NULL, _T ("The Hello Application"));
}
void CMainWindow::OnPaint ()
{
CPaintDC dc (this);
CRect rect;
GetClientRect (&rect);
dc.DrawText (_T ("Hello, MFC"), -1, &rect,
DT_SINGLELINE ¦ DT_CENTER ¦ DT_VCENTER);
}
参考资料：programming windows with mfc