win32 API 질문있습니다.

비행기를 마우스로 아래 위로 움직여 장애물을 피하는게임을 만들려고합니다.

SelectObject 인 비행기를 마우스 왼쪽버튼이 누루면 위로 계속 이동하고

오른쪽 버튼을 누루면 밑으로 내려가게 하려고합니다.

(위로 넘어가지않고 아래로 넘어가지않고 화면안에서만 할수있게하려합니다.)

아직 개념이 잡히지 않아서 어떻게 해야할지모르겠습니다.도와주세요

#include<Windows.h>

#include<WindowsX.h>

#include"resource1.h"

#define hWnd_x 640

#define hWnd_y 480

LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);

HINSTANCE g_hInst;

LPCTSTR lpszClass=TEXT("First");

int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevlnstance,LPSTR lpszCmdParam, int nCmdShow)

{

HWND hWnd;

MSG Message;

WNDCLASS WndClass;

g_hInst=hInstance;

WndClass.cbClsExtra =0;

WndClass.cbWndExtra =0;

WndClass.hbrBackground =(HBRUSH)GetStockObject(WHITE_BRUSH);

WndClass.hCursor =LoadCursor(NULL,IDC_ARROW);

WndClass.hIcon =LoadIcon(NULL,IDI_APPLICATION);

WndClass.hInstance =hInstance;

WndClass.lpfnWndProc =WndProc;

WndClass.lpszClassName =lpszClass;

WndClass.lpszMenuName =NULL;

WndClass.style =CS_HREDRAW | CS_VREDRAW;

RegisterClass(&WndClass);

hWnd=CreateWindow(

lpszClass,

WS_OVERLAPPEDWINDOW,

CW_USEDEFAULT,CW_USEDEFAULT,

hWnd_x,hWnd_y,///////////////////////////////////////윈도우 창 크기

NULL,(HMENU)NULL, hInstance,NULL

);

ShowWindow(hWnd,nCmdShow);

while(GetMessage(&Message,NULL, 0,0)){

TranslateMessage(&Message);

DispatchMessage(&Message);

}

return (int)Message.wParam;

}

LRESULT OnPaint(HWND hWnd, WPARAM wParam, LPARAM lParam)//페인트메세지 처리함수

{

HDC hdc,memDC;

PAINTSTRUCT ps;

HBITMAP hBmpBack,hBmpOldBack;

HBITMAP hBmpAir,hBmpOldAir;

HBITMAP hBmpMask,hBmpOldMask;

RECT rtWin;

//1.DC얻음(화면 DC)

hdc=BeginPaint(hWnd,&ps);

//2.메모리 DC를 생성 - 화면 DC와 호환이 되야함

memDC=CreateCompatibleDC(hdc);

//3. 비트맵 로드

hBmpBack=LoadBitmap(g_hInst, MAKEINTRESOURCE(IDB_BACK));

hBmpMask=LoadBitmap(g_hInst, MAKEINTRESOURCE(IDB_MASK));

hBmpAir=LoadBitmap(g_hInst, MAKEINTRESOURCE(IDB_AIR));

//4.메모리 DC에 비트맵을 적용- 과거 비트맵 객체핸들 저장.

hBmpOldBack=(HBITMAP)SelectObject(memDC,hBmpBack);

//5. 메모리 DC->화면 DC(전송)

GetClientRect(hWnd,&rtWin);

BitBlt(hdc,rtWin.left,rtWin.bottom-160,rtWin.right,160,memDC,0,0,SRCCOPY);

//마스크

hBmpOldMask=(HBITMAP)SelectObject(memDC,hBmpMask);

BitBlt(hdc,xPos,yPos,121,37,memDC,0,0,SRCAND);

//비행기

hBmpOldAir=(HBITMAP)SelectObject(memDC,hBmpAir);

BitBlt(hdc,xPos,yPos,121,37,memDC,0,0,SRCPAINT);

//6. 메모리 DC복원

SelectObject(memDC,hBmpOldBack);

SelectObject(memDC,hBmpOldAir);

//7. 비트맵제거

DeleteObject(hBmpBack);

DeleteObject(hBmpAir);

//8.메모리 DC제거

DeleteDC(memDC);

//9.화면DC반환

EndPaint(hWnd,&ps);

return 0;

}

LRESULT CALLBACK WndProc(HWND hWnd, UINT iMessage, WPARAM wParam, LPARAM lParam)

{

switch(iMessage){

case WM_DESTROY:

PostQuitMessage(0);

return 0;

case WM_PAINT:

return OnPaint(hWnd,wParam,lParam);

}

return(DefWindowProc(hWnd,iMessage,wParam,lParam));

}