Alternatively, how do I detect the minimum bounding rectangle for a TextBox control in order to display all text visibly without clipping?
I tried to do this, and I can do this under regular .NET but I can't do so on Compact Framework. Are there any workarounds I can do?
Thanks,
Mark Rejhon
Is there an equivalent of the Win32 API call DrawText( ) with the DT_CALCRECT flag? Or even GetTextExtentExPoint( ) ? Any way to call lower level WIN CE API calls from Compact Framework?
Problem solved. I accomplished the procedure of determining the height of a wrapped string drawn to a control in Compact Framework 1.0.
The solution is AlexY's method here:
http://forums.microsoft.com/msdn/ShowPost.aspx?PostID=18914
-Alex
I came up with a creative solution for PocketPC (2002 and later) to copy a Label to a temporary TextBox, do the EM_GETLINECOUNT method, and then size the Label according to the size of the TextBox. I came up with a routine that counted the number of pixels of margin around a textbox (which is 6 pixels normally, 3 pixels on each edge), so that I could more instantly count the lines of text in huge amount of text (i.e. 10 kilobytes)
However, for SmartPhones, EM_GETLINECOUNT does not seem to work (SmartPhone 2003), so for SmartPhones, I greatly improved AlexY's method of MeasureStringExtend( ) so that it was pixel-perfect even for 18 kilobytes of word-wrapped text with unexpected control characters including linefeeds and tabs. (Although I had to convert tabs to 8 spaces first). Very slow to count the number of lines in 18 kilobytes of text, but it came up with the correct exact number of lines.
Further improvements to MeasureStringExtend could be done, to speed it up such as making a length approximation and counting upwards/downwards from it, rather than doing it one character at a time, or even using a lookup table on character widths that's dynamically updated everytime a new character is found, but this would be overkill...
It was a big challenge staying away from CF 2.0, but I've managed to stay with CF 1.0 and at the same time, having the same executable run PPC2002, WM2003, WM2003SE, and SmartPhone 2003 without recompiling. Now to figure out how to make an installer that installs on any of those...
