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The _RGBA32 function returns the 32-bit RGBA color value with the specified red, green, blue and alpha component intensities.

= _RGBA32(, , , )

• The value returned is a 32-bit _UNSIGNED LONG color value.
• Return variable types must be _UNSIGNED LONG or resulting color may lose the _BLUE value.
• specifies the red component intensity from 0 to 255.
• specifies the green component intensity from 0 to 255.
• specifies the blue component intensity from 0 to 255.
• specifies the ''alpha'' component transparency value from 0 (fully transparent) to 255 (opaque).
• Alpha or intensity values outside of the valid range of 0 to 255 are clipped.
• Returns LONG 32-bit hexadecimal values from &H00 to &HFF with varying _ALPHA transparency.
• When LONG values are PUT to file, the ARGB values become BGRA. Use LEFT$(MKL$(), 3) to place 3 colors.
• NOTE: Default 32-bit backgrounds are clear black or _RGBA(0, 0, 0, 0). Use CLS to make the black opaque.

Example: Changing the ALPHA value to fade an image in and out using a 32 bit PNG image. (600, 400, 32)

img& = ("qb64_trans.png") 'from http://www.qb64.org/images/qb64bee.png (or use any 24/32 bit image) 'Turn off auto display

' Fade in i% = 255 0 -5

  {{Cl|_LIMIT}} 20                          'control fade speed 
  {{Cl|_PUTIMAGE}} (0, 0)-(600, 400), img&
  {{Cl|LINE}} (0, 0)-(600, 400), {{Cl|_RGBA}}(0, 0, 0, i%), BF 'decrease black box transparency
  {{Cl|_DISPLAY}}

' Fade out i% = 0 255 5

  {{Cl|_LIMIT}} 20                          'control fade speed 
  {{Cl|_PUTIMAGE}} (0, 0)-(600, 400), img&
  {{Cl|LINE}} (0, 0)-(600, 400), {{Cl|_RGBA}}(0, 0, 0, i%), BF 'increase black box transparency
  {{Cl|_DISPLAY}}

• _RGB32, _RGBA, _RGB
• _RED32, _GREEN32, _BLUE32
• HEX$ 32 Bit Values, POINT
• SAVEIMAGE
• Hexadecimal Color Values