troubleshooting Question

TBitmap.Canvas.TextWidth problem

Avatar of chongkeng_woon
chongkeng_woon asked on
4 Comments1 Solution1307 ViewsLast Modified:
assuming i created a TBitmap (bm) as global variable on top ....then,

function TForm1.test();
function getTextWidth(var bm:TBitmap):integer;
var s:string;
var b : tfont;
  s := 'From TransNo: []   To TransNo: []     From Salesman: []   To Salesman: []     From Date: [01/10/2007]   To Date: [31/10/2007]';
  b := TFont.create;
  b.Name := 'Times New Roman';
  b.Size := 8;
  result  := bm.canvas.textwidth(s);

  aWidth := getTextWidth(bm);
  ..... (other source code)
  aWidth := getTextWidth(bm);

at first time, my aWidth value = 595, while the 2nd time , it return 1950; the source code in between have changed my TBtimap property there anyway i can list out all properties of TBitmap object (e.g. size, width ...) so that i can compare what have been changed before and after ...?


Sr. Software Engineer

Our community of experts have been thoroughly vetted for their expertise and industry experience.

Log in to continue reading
Become an EE member today7-DAY FREE TRIAL
Members can start a 7-Day Free trial then enjoy unlimited access to the platform for $9.99/mo
View membership options
Unlock 1 Answer and 4 Comments.
Learn why we charge membership fees
We get it - no one likes a content blocker. Take one extra minute and find out why we block content.
See how we're fighting big data
The Value of Experts Exchange in My Daily IT Life

Experts Exchange (EE) has become my company's go-to resource to get answers. I've used EE to make decisions, solve problems and even save customers. OutagesIO has been a challenging project and... Keep reading >>


Owner of Outages.IO
Phoenix, Arizona, United States
Member Since 2016
Join a full scale community that combines the best parts of other tools into one platform.
Unlock 1 Answer and 4 Comments.
View membership options
“All of life is about relationships, and EE has made a virtual community a real community. It lifts everyone's boat.”
William Peck

Member since 2004