What is ScanLine? How can I use ScanLine in my C++ app built using the VCL?
The ScanLine method provides indexed access to each line of pixels of bitmaps, in VCL apps, i.e Image1->Picture-<Bitmap. ScanLine is used only with DIBs (Device Independent Bitmaps) for image editing tools that do low-level pixel work.
How to use Scanline in bitmaps in a C++ app?
Scanline provides indexed access to each line of pixels. It’s used only with DIBs (Device Independent Bitmaps) for image editing tools that do low-level pixel work. Here’s a simple example of how to use Scanline
where y is an integer that shows the line of bitmap scanned ( maximum is the height-1 of bitmap)
How to use Scanline to scale bitmaps in C++ Builder VCL C++ app?
This official C++ Builder Scanline example shows how to create and draw a scaled bitmap directly by using ScanLine method. It loads a bitmap from a file and then copies it to another bitmap twice its size. Then the two bitmaps are displayed on the form canvas.
How to use Scanline in a C++ Builder FireMonkey C++ App?
In FireMonkey (FMX) application we can use TBitmapData property to read and write ARGB values of a bitmap, For a FMX application on bitmaps please check this example below:
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