• A5_DESIGN_BITMAP Function
• A5_GET_BITMAP Function
• A5_GET_BMP_FROM_FILE Function
• A5_GET_JPEG Function
• A5_IMAGE_TRANSFORM Function
• a5_ink_to_png Function
• BITMAP Function
• BITMAP_ALPHA Function
• BITMAP_COLORS_GET Function
• BITMAP_HEIGHT Function
• BITMAP_SATURATION Function
• BITMAP_SIZE Function
• Bitmap_to_JPEG Function
• BITMAP_TO_PALETTE_PNG Function
• BITMAP_TO_PNG Function
• BITMAP_TRANSLUCENT Function
• BITMAP_WIDTH Function
• CHANGE_COLOR Function
• CLIP_SHAPE Function
• Displaying and Printing Bitmaps
• DRAW_BOX Function
• DRAW_WRAP_SCRIPT Function
• DRAW_WRAP_TEXT Function
• EXTENT_HEIGHT Function
• EXTENT_WIDTH Function
• FILL_OVAL Function
• FILL_PIE Function
• FILL_POLY Function
• FILL_RECT Function
• FILL_ROUND_RECT Function
• FILL_SHAPE Function
• INNER_OVAL Function
• INNER_PIE Function
• INNER_POLY Function
• INNER_RECT Function
• INNER_ROUND_RECT Function
• INNER_SHAPE Function
• JPEG_TO_BITMAP Function
• LINE Function
• LINETO Function
• OVAL Function
• PIE Function
• PNG_TO_BITMAP Function
• POLY Function
• POLY_BEZIER Function
• RECT Function
• ROUND_RECT Function
• SET_FONT Function
• SET_ORIGIN Function
• SET_ROTATE Function
• SET_SCALE Function
• SET_UNITS Function
• SHAPE Function
• START_POLY Function
• TEXT Function
• TEXT_HEIGHT Function
• TEXT_WIDTH Function
• UI_BITMAP_CREATE Function
• UI_BITMAP_CREATE_FROM_SCREEN Function
• UI_BITMAP_CREATE_FROM_XPM Function
• UI_BITMAP_DRAW Function
• UI_BITMAP_DROP Function
• UI_BITMAP_INFO_GET Function
• UI_BITMAP_LOAD Function
• UI_BITMAP_PNG_LOAD Function
• UI_BITMAP_PNG_SAVE Function
• UI_BITMAP_SAVE Function
• UI_PRINTER_DRAW Function
• UI_SCREEN_DRAW Function
• UI_SHAPE_DESTROY Function
• UI_SHAPE_LINETO Function
• UI_SHAPE_OVAL Function
• UI_SHAPE_POLY Function
• UI_SHAPE_RECT Function
• UI_SHAPE_ROUND_RECT Function
• UI_SHAPE_START_POLY Function
• WINDOW_TO_IMAGE Function
• WRAP_TEXT_HEIGHT Function

BITMAP_TO_PNG Function

Syntax

Arguments

bitmap_dataBinary

The input BMP image.

flagsCharacter

Allowable values are:"G" = gray, "R" = RGB, "A" = RGB with Alpha mask, "I" = Interlaced.

backgroundcolorCharacter

The background color.

textCharacter

 

alpha_bitmap_dataBinary

The bitmap to use as an alpha (transparency) mask.

Returns

PNGBinary

Returns he new PNG image.

Description

The BITMAP_TO_PNG() function converts a Windows Bitmap (BMP) file to Portable Network Graphics (PNG) format . Flags include 'G'ray, 'R'gb, 'A'lpha-rgb 'I'nterlaced.

Example

dim ff as P
dim bb as B
dim cc as C
ff = file.open("C:\Documents\Xbasic Reference\Images\logo.bmp",FILE_RO_EXCLUSIVE)
bb = ff.readb(100000)
cc = bitmap_to_png(bb, "R")

See Also

• Bitmap and Graphic Functions
• PNG_TO_BITMAP()