L_InetSendLoadCmd
#include "l_bitmap.h"
#include "ltnet.h"
L_INT EXT_FUNCTION L_InetSendLoadCmd(hComputer, uCommandID, pszFile, nBitsPerPixel, nOrder, uFlags)
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L_COMP hComputer; |
/* handle to a remote computer*/ |
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L_UINT uCommandID; |
/* command id*/ |
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/* filename */ | |
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L_INT nBitsPerPixel; |
/* resulting bitmap pixel depth */ |
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L_INT nOrder; |
/* desired color order*/ |
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L_UINT uFlags; |
/* flags that determine function behavior */ |
Sends a load command to a remote computer.
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Parameter |
Description |
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hComputer |
Handle of the remote computer to which the command will be sent. |
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uCommandID |
Command ID. Each command sent by a member of a connection should have a unique ID. Since a member of a connection may send several commands, this ID allows that member to identify when a specific command request has been completed. |
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pszFile |
Character string containing the name of the image file to load. This should be the name of a file on the computer receiving the command. |
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nBitsPerPixel |
Resulting bitmap pixel depth. The following are valid values: |
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Value |
Meaning |
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0 |
Keep the original file's pixel depth (Do not convert). |
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1 to 8 |
The specified bits per pixel in the resultant bitmap |
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12 |
12 bits per pixel in the resultant bitmap. |
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16 |
16 bits per pixel in the resultant bitmap |
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24 |
24 bits per pixel in the resultant bitmap |
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32 |
32 bits per pixel in the resultant bitmap |
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48 |
48 bits per pixel in the resultant bitmap |
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64 |
64 bits per pixel in the resultant bitmap |
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nOrder |
Color order for 16-, 24-, 32-, 48-, and 64-bit bitmaps. If the resultant bitmap is less than 16 bits per pixel, this will have no effect since palletized images have no order. The following are valid values: |
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Value |
Meaning |
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ORDER_RGB |
[0] Red, green, and blue color order in memory |
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ORDER_BGR |
[1] Blue, green, and red color order in memory |
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ORDER_GRAY |
[2] 12 or 16-bit grayscale image. 12 and 16-bit grayscale images are only supported in the Document/Medical Imaging editions . |
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ORDER_RGBORGRAY |
[3] Load the image as red, green, blue OR as a 12 or 16-bit grayscale image. 12 and 16-bit grayscale images are supported in the Document/Medical Imaging editions only. |
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ORDER_BGRORGRAY |
[4] Load the image as blue, green, red OR as a 12 or 16-bit grayscale image. 12 and 16-bit grayscale images are supported in the Document/Medical Imaging editions only. |
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uFlags |
Binary flags that determine the behavior of the loading process. You can pass some user-defined flag values, or specify one or more of the following values: |
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Value |
Meaning |
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LOADFILE_ALLOCATE |
[0x0001] The function allocates memory for the specified bitmap. (This takes place in addition to the actions of your callback function.) |
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LOADFILE_STORE |
[0x0002] The function loads data into the specified bitmap. (This takes place in addition to the actions of your callback function.) |
Returns
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SUCCESS |
This function was successful. |
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< 1 |
An occurred. Refer to Return Codes. |
Comments
The remote computer should respond by calling L_InetSendLoadRsp in its INETCOMMANDCALLBACK function. This callback function must be set using L_InetSetCommandCallback.
With this command, the local computer will signal the remote computer to load a bitmap and send across the bitmap identifier (not the bitmap data!). The local computer can then use the bitmap identifier in other commands (like L_InetSendAttachBitmapCmd). The bitmap identifier will be sent in the response to this command.
To receive responses to commands, provide an INETRESPONSECALLBACK function. This function must be set using L_InetSetResponseCallback.
The INETCOMMANDCALLBACK function will receive the pszFile, nBitsPerPixel, nOrder and uFlags information in the pParams parameter. The pszFile information will be in pParams[0]. The nBitsPerPixel information will be in pParams[1], and so forth.
Required DLLs and Libraries
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LTNET For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application |
See Also
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Functions: |
L_InetSendLoadRsp, INETCOMMANDCALLBACK, INETRESPONSECALLBACK |
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Topics: |
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Example
L_UINT guCommandID;
L_INT LoadRemoteFile(L_COMP hComputer, L_TCHAR L_FAR* pszFilename)
{
return L_InetSendLoadCmd(hComputer,
guCommandID++, pszFilename, 0, ORDER_BGRORGRAY, OADFILE_ALLOCATE|LOADFILE_STORE);
}