Editbox

I have created a window with an EditBox on it.
I want to create a function that appends the EditBox text with a line of text.
I currently have the following.

PHP Code:

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void OutputDebug(char *text)
{
  SendMessage(hwndEdit, WM_SETTEXT, 0, 
             (LPARAM) text); 
} 


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The above code overwrites what is already in the EditBox.
How do I append it?
Thanks

PHP Code:

---

void OutputDebug(char *text)
{
  char bigbuffer[1000];
  SendMessage(hwndEdit, WM_GETTEXT, 1000, 
             (LPARAM) bigbuffer); 
  strcat(bigbuffer, text);
  SendMessage(hwndEdit, WM_SETTEXT, 0, 
             (LPARAM) bigbuffer); 
} 


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I think...

Call SendMessage with WM_GETTEXT first to return the box's text. Concatenate the two strings, then call WM_SETTEXT to set the new string back into the box.

Woops! CB got there first!

IF you're writing some kind of logger or debug window, be aware that textboxes have a limit on text string length - 32767 chars including the null-terminator.

Thanks - I did think of using a buffer but I thought there might be a more efficient way.

Quote:

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Originally posted by jim mcnamara
IF you're writing some kind of logger or debug window, be aware that textboxes have a limit on text string length - 32767 chars including the null-terminator.

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Thanks for this info

I don't think so. You can save space and sacrifice speed by using WM_GETTEXTLENGTH and strlen(text) to calculate the needed size of bigbuffer and dynamically allocate it.

No. Missed communication.

I thought I was warning him about trying to put too long a string in the editbox, not how to allocate string memory. Issuing this warning was a result of concluding from the fact that his function was named OutputDebug, therefore, he would be streaming output to the box. I could be wrong.

And it really matters little. :D

Quote:

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Thanks - I did think of using a buffer but I thought there might be a more efficient way.

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I hit reply just after this post...