高分求助：我急需一个BMP文件转gif文件的程序,哪位可以发我一个? 谢谢！

[Colorstone0823]

我急需一个BMP文件转gif文件的程序,哪位可以发我一个，谢谢！
我的邮箱：[e-mail] ， [e-mail]

[LocalVar]

用acdsee4.0

[极速小王子]

如果有源程序，请给我一份！谢谢！
[e-mail]

[Colorstone0823]

我需要的是自己编程序实现这个转换

[蒋晟]

Platform SDK: GDI+
Retrieving the Class Identifier for an Encoder
The function GetEncoderClsid in the following example receives the MIME type of an encoder and returns the class identifier (CLSID) of that encoder. The MIME types of the encoders built into GDI+ are as follows:

image/bmp
image/jpeg
image/gif
image/tiff
image/png
The function calls GetImageEncoders to get an array of ImageCodecInfo objects. If one of the ImageCodecInfo objects in that array represents the requested encoder, the function returns the index of the ImageCodecInfo object and copies the CLSID into the variable pointed to by pClsid. If the function fails, it returns –1.

int GetEncoderClsid(const WCHAR* format, CLSID* pClsid)
{
UINT num = 0; // number of image encoders
UINT size = 0; // size of the image encoder array in bytes

ImageCodecInfo* pImageCodecInfo = NULL;

GetImageEncodersSize(&num, &size);
if(size == 0)
return -1; // Failure

pImageCodecInfo = (ImageCodecInfo*)(malloc(size));
if(pImageCodecInfo == NULL)
return -1; // Failure

GetImageEncoders(num, size, pImageCodecInfo);

for(UINT j = 0; j < num; ++j)
{
if( wcscmp(pImageCodecInfo[j].MimeType, format) == 0 )
{
*pClsid = pImageCodecInfo[j].Clsid;
free(pImageCodecInfo);
return j; // Success
}
}

free(pImageCodecInfo);
return -1; // Failure
}
The following console application calls the GetEncoderClsid function to determine the CLSID of the PNG encoder:

#include <windows.h>
#include <gdiplus.h>
#include <stdio.h>
using namespace Gdiplus;

#include "GdiplusHelperFunctions.h"

INT main()
{
// Initialize GDI+.
GdiplusStartupInput gdiplusStartupInput;
ULONG_PTR gdiplusToken;
GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);

CLSID encoderClsid;
INT result;
WCHAR strGuid[39];

result = GetEncoderClsid(L"image/png", &encoderClsid);

if(result < 0)
{
printf("The PNG encoder is not installed.\n");
}
else
{
StringFromGUID2(encoderClsid, strGuid, 39);
printf("An ImageCodecInfo object representing the PNG encoder\n");
printf("was found at position %d in the array.\n", result);
wprintf(L"The CLSID of the PNG encoder is %s.\n", strGuid);
}

GdiplusShutdown(gdiplusToken);
return 0;
}
When you run the preceding console application, you get an output similar to the following:

An ImageCodecInfo object representing the PNG encoder
was found at position 4 in the array.
The CLSID of the PNG encoder is {557CF406-1A04-11D3-9A73-0000F81EF32E}.
Platform SDK: GDI+
Converting a BMP Image to a PNG Image
To save an image to a disk file, call the Save method of the Image class. The following console application loads a BMP image from a disk file, converts the image to the PNG format, and saves the converted image to a new disk file. The main function relies on the helper function GetEncoderClsid, which is shown in Retrieving the Class Identifier for an Encoder.

#include <windows.h>
#include <gdiplus.h>
#include <stdio.h>
using namespace Gdiplus;

INT GetEncoderClsid(const WCHAR* format, CLSID* pClsid); // helper function

INT main()
{
// Initialize GDI+.
GdiplusStartupInput gdiplusStartupInput;
ULONG_PTR gdiplusToken;
GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);

CLSID encoderClsid;
Status stat;
Image* image = new Image(L"Bird.bmp");

// Get the CLSID of the PNG encoder.
GetEncoderClsid(L"image/png", &encoderClsid);

stat = image->Save(L"Bird.png", &encoderClsid, NULL);

if(stat == Ok)
printf("Bird.png was saved successfully\n");
else
printf("Failure: stat = %d\n", stat);

delete image;
GdiplusShutdown(gdiplusToken);
return 0;
}

[macrotao]

请在google上搜索“ImageObject.lib”，这个库可以，而且很简单。但我没条件发给你，你在网上下吧。

[JaneQian]

好象在画图程序中就可以利用另存为来转换