L_SetPNGTRNS (original) (raw)

Summary

Sets the transparency data used by LEADTOOLS when saving PNG files.

Syntax

#include "l_bitmap.h"

L_LTFIL_API L_INT L_SetPNGTRNS (pData, uSize)

Parameters

L_UCHAR * pData

Pointer to a buffer that contains the transparency data to be used for saving PNG files.

L_UINT uSize

Size in bytes, of the buffer pointed to by pData.

Returns

Comments

This function supports 1-bit to 8-bit PNG images.

The values set by this function are valid for the current thread. To change the values used by the current thread, this function must be called again.

Required DLLs and Libraries

• LTFIL
• For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64, Linux.

See Also

Functions

• L_GetPNGTRNS
• L_SetBitmapAlpha
• L_CreateMaskFromBitmapRgn
• L_SetBitmapRgnFromMask

Topics

• Raster Image Functions: Saving Files
• Loading and Saving Images
• PNG Files and Transparency

Example

For an example, refer to L_GetPNGTRNS.

LEADTOOLS Raster Imaging C API Help