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The BMP file has four sections. The first is BITMAPFILEHEADER. This contains the bitmap file signature, the size of the bitmap and the offset to the array of bits that define the bitmap image. The next section is the BITMAPINFOHEADER. This contains information such as the height and widht of the bitmap and the number […]

Copying a bitmap to the clipboard is fairly simple. The one thing to remember is that you should also copy the palette if the bitmap needs a palette to display properly. Function 1: Copy a device-dependent bitmap to clipboard The CopyBitmapToClipboard() function shown below copies the DDB to the clipboard. It also copies the palette […]

Within your program, you may have three different forms of a bitmap, a device-independent bitmap (DIB), a device-dependent bitmap (DDB) and a DIB section. The DIB is essentially a representation of bitmap in a manner that is independent of any device. It contains the information to enable it to be rendered on any device. There […]

Writing a bitmap to a BMP file is fairly simple if we have a handle to device-independent bitmap. We simply write BITMAPINFOHEADER information followed by the contents of the bitmap. The three fields that we have to set in the BITMAPINFOHEADER are the bfType which should always be “BM”, the bfSize which is the size […]

This article describes a class (CDib) encapsulating the Dib API distributed with the DIBLOOK sample. The class methods are mostly the same global functions declared in the dibapi.h file. The names of the functions were slighty modified to reflect encapsulation (e.g. the dib sufix was removed). The code is almost the same, with some modifications. […]

A DIB section is somewhat like the DIB in that it provides access to the bitmap bits for direct modification by the application. But unlike a DIB handle, a DIB section can be used with most GDI functions, including the BitBlt() and StretchBlt() functions. If you are familiar with the LoadImage() function, you know that […]

To create a CBitmap object from a BMP file you essentially have to read the file into memory, use CreateDIBitmap() to get an HBITMAP and then attach this handle to the CBitmap object. The problem however, is to get the colors right. The following code can handle bitmaps with 256 colors or less. Although we […]

If your display supports only 256 colors and you’ve tried to display a 256 color bitmap, you may have noticed that the simply copying the bitmap onto a windows device context is not enough. The bitmap is drawn using only a few colors. The reason for this is that though most display monitors can display […]

The EBGFX Library is a Free MFC compatible library created to get fast access to image data and include several functions not available in the windows gdi. Whether you create a Ray-Tracer, an Image Processing Library, a Painting Program or Games, you need direct pixel access, you can’t just use GetPixel, SetPixelV. One way to […]

Here is a macro that auto-increments the version information  of your VC++ projects with every new build. The behaviour is quite similar to the version autoincrement in VisualBasic or Delphi. The Macro searches for the FileVersion section of your projects resource script. The last number of this quadrupel is automacilly increased and written back to […]

One of the very boring things when hacking a little function directly into the Sourcefile is to copy its definition to the Headerfile. Here is a quick Solution: Put the Cursor in the Line where the Function starts (for Example : void foo( int x) ). Call the Makro ‘DefineMethod’. It searches for the header […]

This article describes a sample with the same funcionality as the known DIBLOOK MFC sample, but enhanced in some ways. The main (new) features of this new sample are: The sample is now completely object oriented, there are no global functions The standard file open dialog has been changed to a new (derived from standard) […]