reactos/rosapps/tests/lineclip/lineclip.c
Steven Edwards 456be5d16b remove trailing whitespace at end of lines
svn path=/trunk/; revision=15091
2005-05-07 21:24:31 +00:00

167 lines
3.9 KiB
C

#include <windows.h>
#include <stdio.h>
LRESULT WINAPI MainWndProc(HWND, UINT, WPARAM, LPARAM);
int WINAPI
WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpszCmdLine,
int nCmdShow)
{
WNDCLASS wc;
MSG msg;
HWND hWnd;
wc.lpszClassName = "ClipClass";
wc.lpfnWndProc = MainWndProc;
wc.style = CS_VREDRAW | CS_HREDRAW;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon(NULL, (LPCTSTR)IDI_APPLICATION);
wc.hCursor = LoadCursor(NULL, (LPCTSTR)IDC_ARROW);
wc.hbrBackground = (HBRUSH)GetStockObject(GRAY_BRUSH);
wc.lpszMenuName = NULL;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
if (RegisterClass(&wc) == 0)
{
fprintf(stderr, "RegisterClass failed (last error 0x%lX)\n",
GetLastError());
return(1);
}
hWnd = CreateWindow("ClipClass",
"Line clipping test",
WS_OVERLAPPEDWINDOW|WS_HSCROLL|WS_VSCROLL,
0,
0,
CW_USEDEFAULT,
CW_USEDEFAULT,
NULL,
NULL,
hInstance,
NULL);
if (hWnd == NULL)
{
fprintf(stderr, "CreateWindow failed (last error 0x%lX)\n",
GetLastError());
return(1);
}
ShowWindow(hWnd, nCmdShow);
while(GetMessage(&msg, NULL, 0, 0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return msg.wParam;
}
static void
DrawLines(HDC hDC)
{
static struct
{
int fromx;
int fromy;
int tox;
int toy;
}
points[ ] =
{
{ 50, 99, 125, 99 },
{ 160, 99, 190, 99 },
{ 300, 99, 225, 99 },
{ 50, 100, 125, 100 },
{ 160, 100, 190, 100 },
{ 300, 100, 225, 100 },
{ 50, 125, 300, 125 },
{ 50, 149, 125, 149 },
{ 160, 149, 190, 149 },
{ 300, 149, 225, 149 },
{ 50, 150, 125, 150 },
{ 160, 150, 190, 150 },
{ 300, 150, 225, 150 },
{ 160, 249, 190, 249 },
{ 160, 250, 190, 250 },
{ 149, 50, 149, 125 },
{ 149, 160, 149, 190 },
{ 149, 300, 149, 225 },
{ 150, 50, 150, 125 },
{ 150, 160, 150, 190 },
{ 150, 300, 150, 225 },
{ 199, 50, 199, 125 },
{ 199, 160, 199, 190 },
{ 199, 300, 199, 225 },
{ 200, 50, 200, 125 },
{ 200, 160, 200, 190 },
{ 200, 300, 200, 225 },
{ 175, 50, 175, 300 },
{ 50, 55, 300, 290 },
{ 300, 295, 50, 60 },
{ 50, 290, 300, 55 },
{ 300, 60, 50, 295 },
{ 55, 50, 290, 300 },
{ 295, 300, 60, 50 },
{ 55, 300, 290, 50 },
{ 295, 50, 60, 300 }
};
int i;
for (i = 0; i < sizeof(points) / sizeof(points[0]); i++)
{
MoveToEx(hDC, points[i].fromx, points[i].fromy, NULL);
LineTo(hDC, points[i].tox, points[i].toy);
}
}
LRESULT CALLBACK MainWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
PAINTSTRUCT ps;
HDC hDC;
RECT clr;
HRGN ClipRgn, ExcludeRgn;
RECT Rect;
switch(msg)
{
case WM_PAINT:
GetClientRect(hWnd, &clr);
ClipRgn = CreateRectRgnIndirect(&clr);
hDC = BeginPaint(hWnd, &ps);
Rect.left = 100;
Rect.top = 100;
Rect.right = 250;
Rect.bottom = 150;
FillRect(hDC, &Rect, CreateSolidBrush(RGB(0xFF, 0x00, 0x00)));
ExcludeRgn = CreateRectRgnIndirect(&Rect);
CombineRgn(ClipRgn, ClipRgn, ExcludeRgn, RGN_DIFF);
DeleteObject(ExcludeRgn);
Rect.left = 150;
Rect.top = 150;
Rect.right = 200;
Rect.bottom = 250;
FillRect(hDC, &Rect, CreateSolidBrush(RGB(0xFF, 0x00, 0x00)));
SelectObject(hDC, CreatePen(PS_SOLID, 0, RGB(0xFF, 0xFF, 0x00)));
DrawLines(hDC);
SelectObject(hDC, CreatePen(PS_SOLID, 0, RGB(0x00, 0x00, 0xFF)));
ExcludeRgn = CreateRectRgnIndirect(&Rect);
CombineRgn(ClipRgn, ClipRgn, ExcludeRgn, RGN_DIFF);
DeleteObject(ExcludeRgn);
SelectClipRgn(hDC, ClipRgn);
DrawLines(hDC);
EndPaint(hWnd, &ps);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hWnd, msg, wParam, lParam);
}
return 0;
}