Question

求一个最简单的GDI绘图源程序

要一个GDI的简短程序。画一个简单的三角形或者平行四边形，或者随便什么基础图形就够了。

别太数学……
类似这种就好——
CDC::MoveTo(int x, int y)
CDC::LineTo(int x, int y)

我是编程白痴，所以麻烦请把源代码绝对完整得发出来——如果要另存为.cpp文件之类也请说明。总之这个代码给我我能直接复制粘贴后在VC上运行成功就行了！

Answer 1

/*FileName:main.c
modifyed by my_love_d*/
#include <windows.h>
LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
{
static char szAppName[] = "GDI" ;
HWND hwnd ;
MSG msg ;
WNDCLASS wndclass ;
wndclass.style = CS_HREDRAW | CS_VREDRAW ;
wndclass.lpfnWndProc = WndProc ;
wndclass.cbClsExtra = 0 ;
wndclass.cbWndExtra = 0 ;
wndclass.hInstance = hInstance ;
wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION) ;
wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ;
wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ;
wndclass.lpszMenuName = NULL ;
wndclass.lpszClassName = szAppName ;
RegisterClass (&wndclass) ;
hwnd = CreateWindow (szAppName, "GDIDemo",
WS_OVERLAPPEDWINDOW,
300, 300,
250, 250,
NULL, NULL, hInstance, NULL) ;
ShowWindow (hwnd, iCmdShow) ;
UpdateWindow (hwnd) ;
while (GetMessage (&msg, NULL, 0, 0))
{
TranslateMessage (&msg) ;
DispatchMessage (&msg) ;
}
return msg.wParam ;
}
LRESULT CALLBACK WndProc (HWND hwnd, UINT iMsg, WPARAM wParam, LPARAM lParam)
{
HDC hdc ;
PAINTSTRUCT ps ;
switch (iMsg)
{
case WM_PAINT:
hdc = BeginPaint (hwnd, &ps) ;
MoveToEx (hdc, 50, 100, NULL) ;
LineTo (hdc, 100, 100) ;
LineTo (hdc, 75, 50) ;
LineTo (hdc, 50, 100) ;

Rectangle(hdc,10,20,40,100);
return 0 ;
case WM_DESTROY:
PostQuitMessage (0) ;
return 0 ;
}
return DefWindowProc (hwnd, iMsg, wParam, lParam) ;
}
新建工程->Win32 Application->空的工程->添加main.c