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IconPro README.TXT notes..... -------------------------------------------------------------------------------- IconPro Icon Manager IconPro is designed to manipulate icons having images with bit depths from 1bpp to 32bpp, as well as sizes from 16x16 to 128x128. IconPro provides no editing capabilities. To create an icon, the user must first edit the image in DIB format, using a program like PBRUSH. Then the image can be imported into IconPro without loss of bit depth. Note that IconPro restricts the size of its child windows, so MDI tiling can look different than expected. When extracting icons from DLL and EXE files, IconPro will operate only on 32bit files. On current versions of NT, icons may look distorted due to the fact that current versions of NT do not support variable sized icons. -------------------------------------------------------------------------------- IconPro Usage IconPro displays icons in MDI child windows, showing you one image at a time. Since an icon may contain more than one image, a list box is provided below the display area to choose which image to look at. IconPro is capable of reading and writing ICO files, as well as extracting icons from Win32 PE format DLLs and EXEs. It can also import from/export to BMP files and copy/paste with the clipboard. Holding the 'Control' key and left-clicking on the XOR mask will make the program calculate new masks, using the pixel color at the mouse location as the transparent color. Menu Options File->New Icon This command creates a new icon resource and a window in which to display it. The newly created icon resource has no images in it. New images would need to be created using the "Edit->Add Format" command. File->Open Icon File This command opens an ICO file and creates a new window in which to display its images. The images stored in the ICO file are enumerated in the listbox at the bottom of the display window. File->Extract From DLL/EXE This command extracts an icon resource from a 32bit DLL or EXE file. (It will fail on 16bit files). If the file contains more than one icon resource, a dialog is shown allowing the choice of which icon resource to extract. File->Close This command closes the current icon resource child window. If the image has been modified, a dialog will be shown asking whether to save changes. File->Save ICO File This command saves the current icon resource to its ICO file. File->Save As ICO File This command saves the current icon resource to a newly named ICO file. File->Exit This command terminates IconPro. Edit->Copy This command causes the XOR mask of the current icon resource's current image to be placed on the clipboard in CF_DIB format. Edit->Paste This command takes the CF_DIB format image from the clipboard and uses it to replace the XOR mask of the current icon resource's current image. If the clipboard image is larger than the current icon image, only the corner of the image is used. If the clipboard image is smaller than the current icon image, some of the resultant icon image may be black or undefined. Edit->Stretch Paste This command takes the CF_DIB format image from the clipboard and uses it to replace the XOR mask of the current icon resource's current image, stretching it to fit the dimensions of the icon image. Edit->Import BMP This command reads a BMP file and uses it to replace the XOR mask of the current icon resource's current image. If the BMP bitmap is larger than the current icon image, only the corner of the image is used. If the BMP bitmap is smaller than the current icon image, some of the resultant icon image may be black or undefined. Edit->Stretch Import BMP This command reads a BMP file and uses it to replace the XOR mask of the current icon resource's current image, stretching it to fit the dimensions of the icon image. Edit->Export BMP This command causes the XOR mask of the current icon resource's current image to be written to a newly named BMP file. Edit->Add Format This command launches a dialog that allows the creation of a new icon image in the current icon resource. Slider controls are provided to allow the Width, Height, and Color Depth to be chosen. Valid ranges for these values are: Width: Min 16, Max 128 Height: Min 16, Max 128 Color Depth: Min 1bpp, Max 32bpp Two images with identical Width, Height and Color Depth are not allowed in the same icon resource. Edit->Remove Format This command removes the current icon image from the current icon resource. Window->Arrange Icons This command arranges the MDI child icons. Window->Cascade This command arranges the MDI child windows in a cascade effect. Window->Tile Horizontal This command horizontally tiles the MDI child windows. Window->Tile Vertical This command vertically tiles the MDI child windows. Help->Contents This command launches help for IconPro. Help->About This command displays the About box. -------------------------------------------------------------------------------- Icons in Win32 Icon images are stored in ICO files and as resources in EXEs and DLLs in near DIB format - a BITMAPINFO followed by XOR bits followed by AND bits. A block of memory like this can be passed to CreateIconFromResourceEx() to create a HICON from the resource. This API expects the bmiHeader.biHeight member of the BITMAPINFO to be the sum of the heights of the XOR and AND masks. Further, this API is not implemented on NT at this time, so CreateIconFromResource() must be used instead. When creating the AND mask for an icon (or any transparent BitBlt), a simple method is to BitBlt from the source image to a mono bitmap and let GDI do the conversions based on SetBkColor(). This will not work with DIBSections. Any BitBlt'ing with DIBSections results in color mapping without regard to the background color. DIBSections can not be used in the ICONINFO structure passed to CreateIconIndirect(). DDBs must be used there. Currently, during the icon selection process in Windows 95, all bit depths >= 8 are treated as equal. Therefore, it is pointless to have both a 24bpp and an 8bpp image in the same ICO file. When running in any video mode of at least 8bpp, Windows will simply choose the first one. Further, in 8bpp mode, icons are always displayed using the system palette. -------------------------------------------------------------------------------- ICO File Format Icons are normally stored in ICO files. The ICO file format is documented in the Windows 3.1 SDK Programmer's Reference, Volume 4: Resources, Chapter 1: Graphics File Formats. The ICO file starts with an ICONDIR structure. The ICONDIR structure is defined as: typedef struct { WORD idReserved; // Reserved WORD idType; // resource type (1 for icons) WORD idCount; // how many images? ICONDIRENTRY idEntries[1]; // entries for each image (idCount of 'em) } ICONDIR, *LPICONDIR; The ICONDIRENTRY structure is defined as: typedef struct { BYTE bWidth; // Width of the image BYTE bHeight; // Height of the image (times 2) BYTE bColorCount; // Number of colors in image (0 if >=8bpp) BYTE bReserved; // Reserved WORD wPlanes; // Color Planes WORD wBitCount; // Bits per pixel DWORD dwBytesInRes; // how many bytes in this resource? DWORD dwImageOffset; // where in the file is this image } ICONDIRENTRY, *LPICONDIRENTRY; So, the file consists of the header followed by the bits for each image. The bits for each image can be located by seeking to dwImageOffset in the file. The format of the bits follows: The bits for each image are stored in som