I have a bitmap that I load from a file and put into an integer array. To do this I draw the bitmap onto a canvas and then uses the canvas' pixels property to get the pixels into the array. The problem is it won't work if the canvas isn't a part of a VCL. When I made a variable of type TCanvas, and tried to draw the bitmap onto it I got a error message saying something like "Canvas does not allow drawing!". Everything worked fine when I drew onto the canvas of a TImage. What am I doing wrong? Is there a better way to do this without using the canvas?
The parallel port is a very commonly known port, it was widely used to connect a printer to the PC, if you look at the back of your computer, for those who don't have newer computers, there will be a port with 25 pins and a small print…
This Article will show you how to validate number with TEdit control,
What's the TEdit control?
TEdit is a standard Windows edit control on a form, it allows to user to write, read and copy/paste single line of text.
Despite its rising prevalence in the business world, "the cloud" is still misunderstood. Some companies still believe common misconceptions about lack of security in cloud solutions and many misuses of cloud storage options still occur every day.