[Win32 API] 다중 모니터 좌표, 크기 구하기

prjCapture.exe

#define WINVER 0x0500 
#include <windows.h> 

LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM); 
HINSTANCE g_hInst; 
HWND hWndMain; 
LPCTSTR lpszClass=TEXT("Capture"); 

int APIENTRY WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance ,LPSTR lpszCmdParam,int nCmdShow) { 
    HWND hWnd; 
    MSG Message; 
    WNDCLASS WndClass; 
    g_hInst=hInstance; 

    WndClass.cbClsExtra=0; 
    WndClass.cbWndExtra=0; 
    WndClass.hbrBackground=(HBRUSH)(COLOR_WINDOW+1); 
    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,lpszClass,WS_OVERLAPPEDWINDOW, 
        CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT, 
        NULL,(HMENU)NULL,hInstance,NULL); 
    ShowWindow(hWnd,nCmdShow); 

    while (GetMessage(&Message,NULL,0,0)) { 
        TranslateMessage(&Message); 
        DispatchMessage(&Message); 
    } 
    return (int)Message.wParam;
} 

int y; 
BOOL CALLBACK MonitorEnumProc(HMONITOR hMonitor, HDC hdcMonitor, LPRECT lprcMonitor, LPARAM dwData) {
    TCHAR sInfo[256]; 
    MONITORINFOEX mi; 

    mi.cbSize = sizeof(MONITORINFOEX); 
    GetMonitorInfo(hMonitor, &mi); 
    wsprintf(sInfo, TEXT("모니터 핸들 = %x, 좌표=(%d,%d)-(%d,%d) %s"), hMonitor, lprcMonitor->left, lprcMonitor->top, lprcMonitor->right, lprcMonitor->bottom, (mi.dwFlags & MONITORINFOF_PRIMARY)==0 ? TEXT(""):TEXT(":주 모니터")); 

    TextOut((HDC) dwData, 10, y, sInfo, lstrlen(sInfo)); 
    y+=20; 
    return TRUE; 
} 

LRESULT CALLBACK WndProc(HWND hWnd,UINT iMessage,WPARAM wParam,LPARAM lParam) { 
    HDC hdc; 
    PAINTSTRUCT ps; 
    TCHAR Mes[256]; 
    int cMon; 
    RECT rcVirt; 

    switch (iMessage) { 
    case WM_CREATE: 
        hWndMain=hWnd; 
        return 0; 
    case WM_DISPLAYCHANGE: 
        InvalidateRect(hWnd, NULL, TRUE);
        UpdateWindow(hWnd); 
        return 0; 
    case WM_PAINT: 
        hdc=BeginPaint(hWnd, &ps); 

        cMon = GetSystemMetrics(SM_CMONITORS); 
        if (cMon == 0) { 
            // Win 95/NT 에서는 다중 모니터를 지원하지 않아 0으로 Return한다. 
            lstrcpy(Mes, TEXT("다중 모니터를 지원하지 않는 시스템입니다.")); 
            TextOut(hdc, 10, 10, Mes, lstrlen(Mes));
        } else { 
            // 모니터 갯수와 색상 포멧이 모두 동일한지 출력한다. 
            wsprintf(Mes, TEXT("모니터 개수 = %d, 색상 포멧=%s"), cMon, GetSystemMetrics(SM_SAMEDISPLAYFORMAT) ? TEXT("모두 동일"):TEXT("다름")); 
            TextOut(hdc, 10, 10, Mes, lstrlen(Mes));

            // 가상 모니터의 좌표를 출력한다. 
            rcVirt.left   = GetSystemMetrics(SM_XVIRTUALSCREEN); 
            rcVirt.top    = GetSystemMetrics(SM_YVIRTUALSCREEN); 
            rcVirt.right  = GetSystemMetrics(SM_CXVIRTUALSCREEN); 
            rcVirt.bottom = GetSystemMetrics(SM_CYVIRTUALSCREEN); 
            wsprintf(Mes, TEXT("가상 화면=(%d,%d)-(%d,%d)"), rcVirt.left, rcVirt.top, rcVirt.right, rcVirt.bottom); 
            TextOut(hdc, 10, 30, Mes, lstrlen(Mes));

            // 다중 모니터에 대한 정보를 출력한다. 
            y = 50; 
            EnumDisplayMonitors(NULL, NULL, MonitorEnumProc, (LPARAM) hdc);
        } 

        EndPaint(hWnd, &ps); 
        return 0; 
    case WM_DESTROY: 
        PostQuitMessage(0); 
        return 0; 
    } 
    return(DefWindowProc(hWnd,iMessage,wParam,lParam)); 
}