그림 인쇄(print)

#include <windows.h>
#include "resource.h"

LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);
HINSTANCE g_hInst;
HWND g_hMainWnd;
LPSTR lpszClass="Print3";

int APIENTRY WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance
         ,LPSTR lpszCmdParam,int nCmdShow)
{
    HWND hWnd;
    MSG Message;
    WNDCLASS WndClass;
    g_hInst=hInstance;
    
    if(!hPrevInstance) {
        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)WndProc;
        WndClass.lpszClassName=lpszClass;
        WndClass.lpszMenuName=NULL;
        WndClass.style=CS_HREDRAW | CS_VREDRAW;
        RegisterClass(&WndClass);
    }
    hWnd=CreateWindow(lpszClass,lpszClass,WS_OVERLAPPEDWINDOW,
         CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,
         NULL,(HMENU)NULL,hInstance,NULL);
    ShowWindow(hWnd,nCmdShow);
    g_hMainWnd=hWnd;
    
    while(GetMessage(&Message,0,0,0)) {
        TranslateMessage(&Message);
        DispatchMessage(&Message);
    }
    return Message.wParam;
}

void Print()
{
    HDC hPrtdc;
    int xpage, ypage;
    DOCINFO doc;
    int Result;
    PRINTDLG pd;
    int dpiX, dpiY;
    HDC MemDC;
    HBITMAP hbit,OldBitmap;
    BITMAP bit;
    int bx,by;

    // 프린터에 관한 정보를 구하고 DC를 만든다.
    memset(&pd,0,sizeof(PRINTDLG));
    pd.lStructSize=sizeof(PRINTDLG);
    pd.Flags=PD_RETURNDC;
    pd.hwndOwner=g_hMainWnd;
    pd.nFromPage=1;
    pd.nToPage=1;
    pd.nMinPage=1;
    pd.nMaxPage=1;
    pd.nCopies=1;
    PrintDlg(&pd);
    hPrtdc=pd.hDC;
    if (hPrtdc == NULL) return;

    // 인쇄 작업을 시작한다.
    doc.cbSize=sizeof(DOCINFO);
    doc.lpszDocName="Test Document";
    doc.lpszOutput=NULL;
    doc.lpszDatatype=NULL;
    doc.fwType=0;
    Result=StartDoc(hPrtdc, &doc);
    if (Result <= 0) goto end;
    Result=StartPage(hPrtdc);
    if (Result <= 0) goto end;

    // 출력을 보낸다.
    xpage = GetDeviceCaps(hPrtdc, HORZRES);
    ypage = GetDeviceCaps(hPrtdc, VERTRES);

    // 프린터의 해상도를 구한다.
    dpiX = GetDeviceCaps(hPrtdc, LOGPIXELSX);
    dpiY = GetDeviceCaps(hPrtdc, LOGPIXELSY);
    Rectangle(hPrtdc,0,0,xpage,ypage);

    // 비트맵을 출력한다.
    Result=GetDeviceCaps(hPrtdc, RASTERCAPS) & RC_BITBLT;
    if (!Result) goto end;
    hbit=(HBITMAP)LoadImage(g_hInst, MAKEINTRESOURCE(IDB_BITMAP1),
        IMAGE_BITMAP,0,0,LR_CREATEDIBSECTION);
    GetObject(hbit,sizeof(BITMAP),&bit);
    bx=bit.bmWidth;
    by=bit.bmHeight;
    MemDC=CreateCompatibleDC(hPrtdc);
    OldBitmap=(HBITMAP)SelectObject(MemDC, hbit);
    StretchBlt(hPrtdc,dpiX,dpiY,4*dpiX,4*by/bx*dpiY,MemDC,0,0,bx,by,SRCCOPY);
    SelectObject(MemDC, OldBitmap);
    DeleteObject(hbit);
    DeleteDC(MemDC);

    // 출력을 종료한다.
    Result=EndPage(hPrtdc);
    if (Result <= 0) goto end;
    // 인쇄 작업을 끝낸다.
    Result=EndDoc(hPrtdc);
    if (Result <= 0) goto end;
end:
    if (pd.hDevMode)
        GlobalFree(pd.hDevMode);
    if (pd.hDevNames)
        GlobalFree(pd.hDevNames);
    DeleteDC(hPrtdc);
    return;
}

LRESULT CALLBACK WndProc(HWND hWnd,UINT iMessage,WPARAM wParam,LPARAM lParam)
{
    HDC hdc;
    PAINTSTRUCT ps;
    HDC MemDC;
    HBITMAP hbit, OldBitmap;
    switch(iMessage) {
    case WM_LBUTTONDOWN:
        Print();
        return 0;
    case WM_PAINT:
        hdc=BeginPaint(hWnd,&ps);
        hbit=LoadBitmap(g_hInst, MAKEINTRESOURCE(IDB_BITMAP1));
        MemDC=CreateCompatibleDC(NULL);
        OldBitmap=(HBITMAP)SelectObject(MemDC, hbit);
        BitBlt(hdc,0,0,123,160,MemDC,0,0,SRCCOPY);
        SelectObject(MemDC, OldBitmap);
        DeleteObject(hbit);
        DeleteDC(MemDC);
        EndPaint(hWnd,&ps);
        return 0;
    case WM_DESTROY:
        PostQuitMessage(0);
        return 0;
    }
    return(DefWindowProc(hWnd,iMessage,wParam,lParam));
}