Databases
StackOverflow2013
Postsdbo
PO.net DrawString / StringFormat problem
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO.net DrawString / StringFormat problem
    primarykey
    data
    text
    <p>I'm developing a .net 3.5 Win Forms program and I've run into an "interesting" problem with text drawing.</p> <p>I'm implementing a text editing control and it draws text with DrawString() and StringFormat.GenericTypographic (henceforth, GT). As the user types, whole words (or groups of words) earlier in the line are moving subtly left and right at random.</p> <p>It seems likely to be rounding errors - an affected block looks to shift one pixel in the horizontal plane as letters are added to the line's end. If I use StringFormat.GenericDefault (GD) this doesn't happen, but characters are rendered less accurately and this isn't acceptable.</p> <p>I reasoned that I could slowly change GD into GT (the settings for each are discussed in MSDN and can obviously be examined in the debugger) and see which FormatFlags or other setting was causing this and go from there. However, if I take a copy of GD, change all the properties so it is identical to GT, the character placement is quite different - the behaviour of these two supposedly identical objects is obviously not the same.</p> <p>Like too many things IMHO, .net Reflector shows that StringFormat is just a wrapper for a non-managed object and I can only assume that not all the properties of this are exposed to .net software.</p> <p>Can anybody suggest anything that might help me? I'm aware that TextRenderer might provide an alternative method for rendering but I discounted that earlier in my design process (although I can't actually remember what the problem was now...).</p> <p><strong>Edit</strong></p> <p>The code I'm using for rendering is as follows:</p> <pre><code>sForm = new StringFormat(StringFormat.GenericTypographic); sForm.FormatFlags |= StringFormatFlags.MeasureTrailingSpaces; using (SolidBrush brush = new SolidBrush(frmt.ForegroundColour)) context.DrawString(line.Text, frmt.DisplayFont, brush, new PointF(horizontal, height), sForm); </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USBob Sammers
    1. USBob Sammers
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. PO.net DrawString / StringFormat problem
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO.net DrawString / StringFormat problem
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO.net DrawString / StringFormat problem
      1. This table or related slice is empty.
      1. VTUpMod
    1. CODo you use MeasureString()? Show a snippet with that call.
      singulars
      1. PO.net DrawString / StringFormat problem
      1. USHans Passant
    2. COI don't use MeasureString() here - I've edited the answer to show what I am doing.
      singulars
      1. PO.net DrawString / StringFormat problem
      1. USBob Sammers
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload