1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99

#include <stdio.h>
#include <windows.h>
#include <public/fpdfview.h>

FPDF_PAGE page;

LRESULT CALLBACK WndProc(HWND window, UINT msg, WPARAM w, LPARAM l)
{
    switch (msg)
    {
        case WM_PAINT:
            {
                // draw page directly on window (device context)
                HDC dc = GetDC(window);
                FPDF_RenderPage(dc,page,0,0,2479,3507,0,0);
                ReleaseDC(window, dc);
                return 0;
            }
        case WM_DESTROY:
            PostQuitMessage(EXIT_SUCCESS);
            return 0;
        default:
            return DefWindowProc(window, msg, w, l);
    }
}

int main(int argc, char* argv[])
{
    WNDCLASSEX wndClass;
    wndClass.cbSize        = sizeof(WNDCLASSEX);
    wndClass.style         = 0;
    wndClass.lpfnWndProc   = WndProc;
    wndClass.cbClsExtra    = 0;
    wndClass.cbWndExtra    = 0;
    wndClass.hInstance     = GetModuleHandle(0);
    wndClass.hIcon         = LoadIcon(0,IDI_APPLICATION);
    wndClass.hCursor       = LoadCursor(0,IDC_ARROW);
    wndClass.hbrBackground = (HBRUSH)GetStockObject(COLOR_WINDOW+1);
    wndClass.lpszMenuName  = NULL;
    wndClass.lpszClassName = "class name";
    wndClass.hIconSm       = LoadIcon(0,IDI_APPLICATION);

    if (!RegisterClassEx(&wndClass))
    {
        printf("RegisterClassEx failed");
        return EXIT_FAILURE;
    }

    HWND window = CreateWindowEx( 0
                                , wndClass.lpszClassName
                                , "window title"
                                , WS_OVERLAPPED | WS_SIZEBOX
                                , CW_USEDEFAULT
                                , CW_USEDEFAULT
                                , CW_USEDEFAULT
                                , CW_USEDEFAULT
                                , 0
                                , 0
                                , GetModuleHandle(0)
                                , NULL);
    if (!window)
    {
        printf("CreateWindowEx failed");
        return EXIT_FAILURE;
    }

    ShowWindow(window, SW_SHOWNORMAL);

    // init
    FPDF_InitLibraryWithConfig(NULL);

    // load doc
    FPDF_DOCUMENT doc = FPDF_LoadDocument("original.pdf", 0);
    if (doc == 0)
    {
        printf("failed to load 'original.pdf'");
        return EXIT_FAILURE;
    }

    // load page
    page = FPDF_LoadPage(doc, 0);
    if (page == 0)
    {
        printf("failed to load page 1");
        return EXIT_FAILURE;
    }

    // draw page
    MSG msg;
    for (BOOL s = GetMessage(&msg, 0, 0, 0); s && !(s == -1); s = GetMessage(&msg, 0, 0, 0))
    {
        DispatchMessage(&msg);
    }

    // de-init
    FPDF_DestroyLibrary();

    return EXIT_SUCCESS;
}