printscreen.cpp

#include "printscreen.h"

PrintScreen::PrintScreen()
{
    //ctor
}

PrintScreen::~PrintScreen()
{
    //dtor
}

int PrintScreen::Print()
{
    #ifdef WIN
        RECT rc;
        HWND hwnd = FindWindow(TEXT("Notepad"), NULL);    //the window can't be min
        if (hwnd == NULL)
        {
            cout << "it can't find any 'note' window" << endl;
            return 0;
        }
        GetClientRect(hwnd, &rc);

        //create
        HDC hdcScreen = GetDC(NULL);
        HDC hdc = CreateCompatibleDC(hdcScreen);
        HBITMAP hbmp = CreateCompatibleBitmap(hdcScreen,
            rc.right - rc.left, rc.bottom - rc.top);
        SelectObject(hdc, hbmp);

        //Print to memory hdc
        PrintWindow(hwnd, hdc, PW_CLIENTONLY);

        //copy to clipboard
        OpenClipboard(NULL);
        EmptyClipboard();
        SetClipboardData(CF_BITMAP, hbmp);
        CloseClipboard();

        //release
        DeleteDC(hdc);
        DeleteObject(hbmp);
        ReleaseDC(NULL, hdcScreen);
    #endif
    //cout << "success copy to clipboard, please paste it to the 'mspaint'" << endl;

    return 0;
}