Copyimage function how to#
Copyimage function windows#

When you are finished using the resource, you can release its associated memory by calling one of the functions in the following table. To get extended error information, call GetLastError. If the function fails, the return value is NULL. If the function succeeds, the return value is the handle to the newly created image. If the resource contains multiple images, the function uses the size of the first image. If this flag is not specified and cxDesired and cyDesired are set to zero, the function uses the actual resource size. Uses the width or height specified by the system metric values for cursors or icons, if the cxDesired or cyDesired values are set to zero. This flag is only valid if uType is IMAGE_BITMAP. Otherwise, the bitmap image is created as a device-dependent bitmap. If this is set and a new bitmap is created, the bitmap is created as a DIB section. If this flag is not specified, a new object is always created. Returns the original hImage if it satisfies the criteria for the copy-that is, correct dimensions and color depth-in which case the LR_COPYDELETEORG flag is ignored. This will succeed only if hImage was loaded by LoadIcon or LoadCursor, or by LoadImage with the LR_SHARED flag. If this flag is set, CopyImage uses the size in the resource file closest to the desired size. Without this flag, CopyImage stretches the original image to the new size. This is useful for creating a different-sized copy when the resource file contains multiple sizes of the resource. hinst Identifies an instance of the module that contains the image to be copied. If necessary, the function stretches the bits to fit the desired size of the new image. Tries to reload an icon or cursor resource from the original resource file rather than simply copying the current image. API Description : The CopyImage function creates a new image (icon, cursor, or bitmap) and copies the attributes of the specified image to the new one. Valueĭeletes the original image after creating the copy. This parameter can be one or more of the following values. If this is zero, then the returned image will have the same height as the original hImage. The desired height, in pixels, of the image. If this is zero, then the returned image will have the same width as the original hImage. The desired width, in pixels, of the image. This parameter can be one of the following values. parameters -param h Ī handle to the image to be copied.

Copyimage function windows#

All rights reserved.Ext-ms-win-ntuser-gui-l1-3-0 (introduced in Windows 10, version 0)Ĭreates a new image (icon, cursor, or bitmap) and copies the attributes of the specified image to the new one. This parameter can be one of the following values: Specifies the type of image to be copied. Identifies an instance of the module that contains the image to be copied. If necessary, the function stretches the bits to fit the desired size of the new image.ĭeclare Function CopyImage Lib 'user32' (ByVal handle As Long, ByVal imageType As Long, ByVal newWidth As Long, ByVal newHeight As Long, ByVal lFlags As Long) As Long The CopyImage function creates a new image (icon, cursor, or bitmap) and copies the attributes of the specified image to the new one.

Copyimage function how to#

How to use CopyImage API to create a resized monochrome image from the color image ?