Thread: C Under Windows Problem

Thank You I Have Got That What I Was trying To Do

Originally Posted by anonytmouse

No, for the reasons pointed out by vart. In my example, the size of the array is 512, and GetWindowText will return a maximum of 512 characters, as indicated by the last argument.

If you need to return an unknown number of characters and therefore can not use a fixed size array, you can allocate memory dynamically. This function shows how to do that:

Code:

char* AllocAndGetText(HWND hwndControl)
{
	int count = GetWindowTextLength(hwndControl);
	char* result = malloc(count * sizeof(char));

	if (result != NULL)
	{
		GetWindowText(hwndControl, result, count);
	}

	return result;
}

and the function would be used in the following manner:

Code:

char* edit_text = AllocAndGetText(hwndEdit);

/* Use text in edit_text */

/* Free memory when you're done with it. */
free(edit_text);

However, usually there is a reasonable maximum number of characters you would expect and you can use an array.

This tutorial is very good if you haven't seen it.

char* result = malloc(count * sizeof(char));
Didn't Work
I Used
char *result = (char *) malloc(count * sizeof(char));
But It Gets 1 Character less That The Text In The textbox

Originally Posted by CornedBee

This ain't MFC ...

Yes, my mistake, I did'nt read the first post thoroughly