[wxWidgets]Embedding PNG images into executables(��png嵌入到程序中)

xinst — Fri, 04 Dec 2009 03:07:00 GMT

首先需要用工具��png囄��转成.cpp或�?h文�g
工具�Q?span class=mw-headline>bin2c
源代码：

// bin2c.c
//
// convert a binary file into a C source vector
//
// THE "BEER-WARE LICENSE" (Revision 3.1415):
// sandro AT sigala DOT it wrote this file. As long as you retain this notice you can do
// whatever you want with this stuff.  If we meet some day, and you think this stuff is
// worth it, you can buy me a beer in return.  Sandro Sigala
//
// syntax:  bin2c [-c] [-z]
//
//          -c    add the "const" keyword to definition
//          -z    terminate the array with a zero (useful for embedded C strings)
//
// examples:
//     bin2c -c myimage.png myimage_png.cpp
//     bin2c -z sometext.txt sometext_txt.cpp

#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#ifndef PATH_MAX
#define PATH_MAX 1024
#endif

int useconst = 0;
int zeroterminated = 0;

int myfgetc(FILE *f)
{
    int c = fgetc(f);
    if (c == EOF && zeroterminated)
    {
        zeroterminated = 0;
        return 0;
    }
    return c;
}

void process(const char *ifname, const char *ofname)
{
    FILE *ifile, *ofile;
    errno_t err = fopen_s(&ifile,ifname,"rb");
    if (ifile == NULL)
    {
        fprintf(stderr, "cannot open %s for reading\n", ifname);
        exit(1);
    }
    fopen_s(&ofile,ofname, "wb");
    if (ofile == NULL)
    {
        fprintf(stderr, "cannot open %s for writing\n", ofname);
        exit(1);
    }
    char buf[PATH_MAX], *p;
    const char *cp;
    if ((cp = strrchr(ifname, '/')) != NULL)
    {
        ++cp;
    } else {
        if ((cp = strrchr(ifname, '\\')) != NULL)
            ++cp;
        else
            cp = ifname;
    }
    strcpy_s(buf, cp);
    for (p = buf; *p != '\0'; ++p)
    {
        if (!isalnum(*p))
            *p = '_';
    }
    fprintf(ofile, "static %sunsigned char %s[] = {\n", useconst ? "const " : "", buf);
    int c, col = 1;
    while ((c = myfgetc(ifile)) != EOF)
    {
        if (col >= 78 - 6)
        {
            fputc('\n', ofile);
            col = 1;
        }
        fprintf(ofile, "0x%.2x, ", c);
        col += 6;
    }
    fprintf(ofile, "\n};\n");

    fclose(ifile);
    fclose(ofile);
}

void usage(void)
{
    fprintf(stderr, "usage: bin2c [-cz]  \n");
    exit(1);
}

int main(int argc, char **argv)
{
    while (argc > 3)
    {
        if (!strcmp(argv[1], "-c"))
        {
            useconst = 1;
            --argc;
            ++argv;
        } else if (!strcmp(argv[1], "-z"))
        {
            zeroterminated = 1;
            --argc;
            ++argv;
        } else {
            usage();
        }
    }
    if (argc != 3)
    {
        usage();
    }
    process(argv[1], argv[2]);
    return 0;
}

在官方论坛中的做了些修改。去掉了一些警告信息�?br>
2、在你的�E�序中包含�{换好的cpp或者h
#include

wxMemoryInputStream istream(myimage_png, sizeof myimage_png);
wxImage myimage_img(istream, wxBITMAP_TYPE_PNG);

或者可以定义个�?/p>

#define wxGetBitmapFromMemory(name) _wxGetBitmapFromMemory(name ## _png, sizeof(name ## _png))
inline wxBitmap _wxGetBitmapFromMemory(const unsigned char *data, int length) {
wxMemoryInputStream is(data, length);
return wxBitmap(wxImage(is, wxBITMAP_TYPE_ANY, -1), -1);
}

注意�Q�要���保png的句柄初始化了。wxImage::AddHandler(new wxPNGHandler);

xinst 2009-12-04 11:07 发表评论

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[wxWidgets]Embedding PNG images into executables(���png嵌入到程序中)

[wxWidgets]Embedding PNG images into executables(��png嵌入到程序中)