问题相关代码,请勿粘贴截图
#include<Windows.h>
#include
#include<time.h>
using namespace std;
const string APPTITLE = "Game Loop";
HWND window;
HDC device;
bool gameover = false;
void DrawBitmap(char *filename, int x, int y)
{
HBITMAP image = (HBITMAP)LoadImage(0,"c.bmp",IMAGE_BITMAP,0,0,LR_LOADFROMFILE);
BITMAP bm;
GetObject(image,sizeof(BITMAP),&bm);
HDC hdcImage = CreateCompatibleDC(device);
SelectObject(hdcImage,image);
BitBlt(
device,
x, y,
bm.bmWidth, bm.bmHeight,
hdcImage,
0, 0,
SRCCOPY);
DeleteDC(hdcImage);
DeleteObject((HBITMAP)image);
}
bool Game_Init()
{
srand(time(NULL));
return 1;
}
void Game_Run()
{
if (gameover==true)return;
RECT rect;
GetClientRect(window,&rect);
int x= rand() % (rect.right-rect.left);
int y = rand() % (rect.bottom-rect.top);
DrawBitmap("c.bmp",x,y);
}
void Game_End()
{
ReleaseDC(window,device);
}
LRESULT CALLBACK WinProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_DESTROY:
gameover = true;
PostQuitMessage(0);
break;
}
return DefWindowProc(hWnd,message,wParam,lParam);
}
ATOM MyRegisterClass(HINSTANCE hInstance)
{
WNDCLASSEX wc;
wc.cbSize= sizeof(WNDCLASSEX);
wc.style = CS_HREDRAW | CS_VREDRAW;
wc.lpfnWndProc = (WNDPROC)WinProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = NULL;
wc.hCursor = LoadCursor(NULL,IDC_ARROW);
wc.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
wc.lpszMenuName = NULL;
wc.lpszClassName = APPTITLE.c_str();
wc.hIconSm = NULL;
return RegisterClassEx(&wc);
}
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
window = CreateWindow(
APPTITLE.c_str(),
APPTITLE.c_str(),
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,
CW_USEDEFAULT,
640,
480,
NULL,
NULL,
hInstance,
NULL);
if (window == 0) return 0;
ShowWindow(window,nCmdShow);
UpdateWindow(window);
device = GetDC(window);
return 1;
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
MSG msg;
MyRegisterClass(hInstance);
if (!InitInstance(hInstance,nCmdShow)) return 0;
if (!Game_Init()) return 0;
while (!gameover)
{
if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
Game_Run();
}
Game_End();
return msg.wParam;
}
我想要达到的结果
图片输出到屏幕上,谢谢。