不停的畫框的小程式

#include

#include

#include "resource.h"

#define numlines ((int) (sizeof devcaps / sizeof devcaps [0]))

struct

devcaps = ;

lresult callback wndproc(hwnd hwnd, uint message, wparam wparam, lparam lparam);

void drawrectangle(hwnd hwnd);

return 0;}

hmenu hmenu = null;

hmenu = ::loadmenu(hinstance, makeintresource(idr_menu1));

::showwindow(hwnd, ncmdshow);

::updatewindow(hwnd);

while (true)

::translatemessage(&msg);

::dispatchmessage(&msg);

}else}

return msg.wparam;}

void drawrectangle(hwnd hwnd);

int  cxclient = 0;

int  cyclient = 0;

::getclientrect(hwnd, &rect);

cxclient = rect.right - rect.left;

cyclient = rect.bottom - rect.top;

::setrect(&rect, rand() % cxclient, rand() % cyclient, rand() % cxclient, rand() % cyclient);

hbrush = ::createsolidbrush(rgb(rand() % 256, rand() % 256, rand() % 256));

hdc = ::getdc(hwnd);

::fillrect(hdc, &rect, hbrush);

::releasedc(hwnd, hdc);

::deleteobject(hbrush);}

lresult callback wndproc(hwnd hwnd, uint message, wparam wparam, lparam lparam)

;textmetric tm   = ;

switch (message)

return 0;

case wm_paint:

::selectobject(hdc, ::getstockobject(null_brush));

::rectangle(hdc, 0, 0, 100, 50);

rect rect;

rect.left = 0;

rect.top = 60;

rect.bottom = 120;

rect.right = 200;

//::selectobject(hdc, ::getstockobject(gray_brush));

::framerect(hdc, &rect, (hbrush)::getstockobject(gray_brush));

rect.left = 0;

rect.top = 130;

rect.bottom = 200;

rect.right = 400;

//::fillrect(hdc, &rect, (hbrush)::getstockobject(white_brush));

::invertrect(hdc, &rect);

::endpaint(hwnd, &ps);

}return 0;

case wm_destroy:

return 0;

default:

break;}

return ::defwindowproc(hwnd, message, wparam, lparam);}

不停的畫框的小程式

include include include resource.h define numlines int sizeof devcaps sizeof devcaps 0 struct devcaps lresult callback wndproc hwnd hwnd,uint message,...

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