需要些SDK的知识,windows的实现中基本上都是用的C语言,其各种接口基本上都是原生C语言函数,具体比如SDK用的windows API。
使用纯C语言编写windows程序,工作量将会相当大,下面是一个小例子:
/*
* This is a simple windows program, it does nothing but draw an ellipse.
* Windows SDK, Win32 API ,Pure C, (Not C++ or MFC !!)
* Suxpert at gmail dot com, 2008/8/24
* */
#include <windows.h>
LONG WINAPI WndProc( HWND, UINT, WPARAM, LPARAM );
int APIENTRY WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPSTR lpszCmdLine, int nCmdShow ){
/* The Entry for windows program, just like main() in dos */
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 = "WinSDKtest"; // WNDCLASS name
RegisterClass( &wc );
hwnd = CreateWindow (
"WinSDKtest", // 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 )
{
/* Windows will call this function anytime... */
PAINTSTRUCT ps;
HDC hdc;
switch(message){
case WM_PAINT:
hdc = BeginPaint( hwnd, &ps );
Ellipse( hdc, 0, 0, 800, 600 );
// Here we Draw an ellipse in the window of our program
EndPaint( hwnd, &ps );
break; // Someone like to write return here.
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc( hwnd, message, wParam, lParam );
}
return 0;
}
基本过程就是直接调用windows提供的API函数,完成从窗口创建,显示等界面功能到深层的文件操作,注册表等甚至windows内核调试等高级功能。
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