winapi_도형 복사붙여넣기 프로그램

윈도우 프로그래밍 수업들을 때, 빠르게 프로그래밍한 것입니다.

그려진 원을 선택해서 메뉴 혹은 단축키를 눌러 복사 붙여넣기를 수행할 수 있습니다.

나중에 유사 그림판같은것 만들때 사용할수 있겠어요.

「소스코드」

#include <windows.h> 
#include <TCHAR.H> 
#include <math.h>
#include <vector>
 
#include "resource.h"
 
using namespace std;
 
LRESULT CALLBACK WndProc(HWND hwnd, UINT iMsg, WPARAM wParam, LPARAM lParam);
 
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpszCmdLine, int nCmdShow)
{
    HWND hwnd; // handle window
    MSG msg;   // message
 
    HACCEL hAcc;
    hAcc = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDR_ACCELERATOR1));
 
    WNDCLASS WndClass;                                            // window class
    WndClass.style = CS_HREDRAW | CS_VREDRAW;                     // 출력 형태
    WndClass.lpfnWndProc = WndProc;                               // 프로시저 함수 등록
    WndClass.cbClsExtra = 0;                                      // 클래스 여분 메모리
    WndClass.cbWndExtra = 0;                                      // 윈도우 여분 메모리
    WndClass.hInstance = hInstance;                               // 윈도 인스턴스
    WndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);             // 아이콘
    WndClass.hCursor = LoadCursor(NULL, IDC_ARROW);               // 커서
    WndClass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH); // 윈도우 초기 배경색 지정
    WndClass.lpszMenuName = MAKEINTRESOURCE(ID_FILENEW);                                 // 메뉴 이름
    WndClass.lpszClassName = _T("WindowClass_1");                 // 클래스 이름
 
    RegisterClass(&WndClass);
    hwnd = CreateWindow(_T("WindowClass_1"), _T("WindowProgramming Study"), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL);
    ShowWindow(hwnd, nCmdShow);
    UpdateWindow(hwnd);
 
    while (GetMessage(&msg, NULL, 0, 0))
    {
        if (!TranslateAccelerator(hwnd, hAcc, &msg))
        {
            TranslateMessage(&msg);
            DispatchMessage(&msg);
        }
    }
 
    return (int)msg.wParam;
}
 
struct vec2
{
    int x;
    int y;
};
 
struct Circle
{
    vec2 pos;
    int radius;
};
 
bool isSellect(Circle object, vec2 pos)
{
    float length = sqrt(((pos.x - object.pos.x) * (pos.x - object.pos.x)) + ((pos.y - object.pos.y) * (pos.y - object.pos.y)));
    if (length <= object.radius)
    {
        return true;
    }
    return false;
}
 
LRESULT CALLBACK WndProc(HWND hwnd, UINT iMsg, WPARAM wParam, LPARAM lParam)
{
    HDC hdc;
    PAINTSTRUCT ps;
    int answer;
 
    static vector<Circle> CirclePool;
    static int SelectID = -1;
    bool isAct = false;
 
    static Circle Clipboard;
    static bool isPasteActive = false;
 
    static HPEN pen;
 
    switch (iMsg)
    {
    case WM_CREATE:
        CirclePool.push_back({ {20, 20,}, 20});
        break;
 
    case WM_LBUTTONDOWN:
        if (isPasteActive)
        {
            CirclePool.push_back({ {LOWORD(lParam), HIWORD(lParam)}, Clipboard.radius });
            isPasteActive = false;
            InvalidateRgn(hwnd, NULL, true);
            break;
        }
        isAct = false;
        for (int i = 0; i < CirclePool.size(); i++)
        {
            if (isSellect(CirclePool[i], { LOWORD(lParam), HIWORD(lParam) }))
            {
                SelectID = i;
                isAct = true;
                EnableMenuItem(GetSubMenu(GetMenu(hwnd), 1), ID_EDIT_COPY, MF_ENABLED);
            }
        }
        if (!isAct) 
        { 
            SelectID = -1; 
            EnableMenuItem(GetSubMenu(GetMenu(hwnd), 1), ID_EDIT_COPY, MF_GRAYED); 
        }
        InvalidateRgn(hwnd, NULL, true);
        break;
 
    case WM_PAINT:
        hdc = BeginPaint(hwnd, &ps);
 
        for (int i = 0; i < CirclePool.size(); i++)
        {
            pen = CreatePen(PS_SOLID, 1, RGB(0, 0, 0));
            SelectObject(hdc, pen);
            if (i == SelectID)
            {
                pen = CreatePen(PS_SOLID, 2, RGB(255, 0, 0));
                SelectObject(hdc, pen);
                //Rectangle(hdc, CirclePool[i].pos.x - CirclePool[i].radius, CirclePool[i].pos.y - CirclePool[i].radius, CirclePool[i].pos.x + CirclePool[i].radius, CirclePool[i].pos.y + CirclePool[i].radius);
            }
            Ellipse(hdc, CirclePool[i].pos.x - CirclePool[i].radius, CirclePool[i].pos.y - CirclePool[i].radius, CirclePool[i].pos.x + CirclePool[i].radius, CirclePool[i].pos.y + CirclePool[i].radius);
        }
        DeleteObject(pen);
        EndPaint(hwnd, &ps);
        break;
 
    case WM_COMMAND:
        switch (LOWORD(wParam))
        {
        case ID_FILE_NEW:
            MessageBox(hwnd, _T("새 파일을 열겠습니까?"), _T("새파일 선택"), MB_OKCANCEL);
            break;
        case ID_FILE_OPEN:
            break;
        case ID_FILE_EXIT:
            answer = MessageBox(hwnd, _T("파일을 저장하고 끝내겠습니까?"), _T("끝내기 선택"), MB_YESNOCANCEL);
            if (answer == IDYES | answer == IDNO)
                PostQuitMessage(0);
            break;
        case ID_EDIT_CANCLE:
            EnableMenuItem(GetSubMenu(GetMenu(hwnd), 1), ID_EDIT_PASTE, MF_GRAYED);
            isPasteActive = false;
            break;
        case ID_EDIT_COPY:
            Clipboard = CirclePool[SelectID];
            EnableMenuItem(GetSubMenu(GetMenu(hwnd), 1), ID_EDIT_PASTE, MF_ENABLED);
            break;
        case ID_EDIT_PASTE:
            isPasteActive = true;
            break;
        }
        break;
 
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    }
    return DefWindowProc(hwnd, iMsg, wParam, lParam);
}