• 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

 

UI_BITMAP_DRAW Function

Description

UI_BITMAP_DRAW() draws on a bitmap in memory.

Discussion

L UI_BITMAP_DRAW(C name,C drawing_code) name The name of the bitmap to modify. drawing_code One or more Xbasic commands that modify the image. The command string begins with an starting string, such as , and concludes with an ending string, such as %code%. Each command is on a separate line, starting with the line after .

Example

Get the original color image, then extract the color data and the alpha channel data.

png_data = file.to_blob("c:\documents\Xbasic Reference\Images\toucan.png")
rgb_data = png_to_bitmap(png_data, "R")
trans_data = png_to_bitmap(png_data, "A")

Create two bitmaps from the color data and the alpha channel data.

ui_bitmap_load("rgb", rgb_data)
ui_bitmap_load("trans", trans_data)

Calculate the positions of the three images.

pixsize = ui_bitmap_info_get(rgb_data, "w,h")
xpix = valpixsize, 1, ","?
ypix = valpixsize, 2, ","?
xperin = ui_info(4)
yperin = ui_info(5)
width = xpix/xperin
height = ypix/yperin

Combine the three images.

ui_bitmap_create("combine", width, height)
stone_data = file.to_blob("C:\WINDOWS\Greenstone.bmp")
ui_bitmap_load("Stone", stone_data)
ui_bitmap_draw("combine", <<%code%
bitmap("stone", 0, 0)
bitmap_alpha("rgb", 0, 0, "trans")
%code%)

Display the three images.

ui_dlg_box("image", <<%dlg%
{image=rgb} {image=trans} {image=combine}
%dlg%)

Limitations

Desktop applications only.

See Also

• Bitmap and Graphic Functions