Win32应用程序。在MyRegisterClass中,wc.hInsance = hInstance。显然“ hInstane是未定义的标识符。为什么这样?我使用Visual Studio 2013,并且紧随Jonathan S Harbors关于游戏编程的书。
码。
include <Windows.h>
include <time.h>
include <iostream>
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;
}
}
最佳答案
您代码的结尾应为:
}
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);
}
注意 :
MyRegisterClass
定义中没有分号MyRegisterClass
末尾只有一个大括号在
MyRegisterClass
定义上方添加右括号这样,代码即可正确编译。