从HICON获取字节，从服务器到客户端通过套接字发送 [英] Get bytes from HICON to sending via socket from server to client

问题描述

我需要从HICON句柄中获取字节，但我不知道如何。

i需要发送带有

发送的字节（套接字，（CHAR *） & Byte_to_send，sizeof（Byte_to_send）;

Byte_to_send应该是与每个Windows应用程序的HICON关联的字节，我已经用这种方式得到它：

HICON icon =（HICON）GetClassLong（hWnd，GCL_HICON）;



我尝试过：



send（socket，（CHAR *）& Byte_to_send，sizeof（Byte_to_send）;

Byte_to_send应该是与每个Windows应用程序的HICON相关联的字节，我已经得到了它这样：

HICON icon =（HICON）GetClassLong（hWnd，GCL_HICON）;

Hi, I need to get bytes from HICON handle but I do not know how.
i need to send the byte with
send(socket,(CHAR*)&Byte_to_send,sizeof(Byte_to_send);
Byte_to_send should be the bytes associated to HICON of each windows application, and I've got it in this way:
HICON icon = (HICON)GetClassLong(hWnd, GCL_HICON);

What I have tried:

send(socket,(CHAR*)&Byte_to_send,sizeof(Byte_to_send);
Byte_to_send should be the bytes associated to HICON of each windows application, and I've got it in this way:
HICON icon = (HICON)GetClassLong(hWnd, GCL_HICON);

推荐答案

使用 GetIconInfo函数（Windows） [ ^ ]或 GetIconInfoEx功能（Windows） [ ^ ]和发送这些数据。这需要使用 HBITMAP 句柄来访问位图数据。



获取像素数据 HBITMAP 将此用于DIB（设备独立位图）：

Use GetIconInfo function (Windows)[^] or GetIconInfoEx function (Windows)[^] and send these data. This requires using the HBITMAP handles to get access to the bitmap data.

To get the pixel data of an HBITMAP use this for a DIB (Device Independant Bitmap):

DIBSECTION ds;
int nSizeDS = ::GetObject(hBitmap, sizeof(ds), &ds);
// hBitmap is a DIB
if (sizeof(ds) == nSizeDS)
{
    // This should not be necessary.
    // But many MSDN examples perform these calculations.
    if (0 == ds.dsBmih.biSizeImage)
    {
        if (0 == ds.dsBm.bmWidthBytes)
            ds.dsBm.bmWidthBytes = ((ds.dsBm.bmWidth * ds.dsBm.bmBitsPixel + 31) & ~31) / 8;
        ds.dsBmih.biSizeImage = ds.dsBm.bmHeight * ds.dsBm.bmWidthBytes;
    }
    // Image data at ds.dsBm.bmBits
    // Data size in ds.dsBmih.biSizeImage
}

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