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Win32(non-MFC) How to resize a button control based on dynamically configuable text

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Last Modified: 2013-12-14
Hello,

Basically I am new to programming and espically Win32 GUI programming(non-mfc).  I am basically trying to resize and reposition a Button Control (within a dialog) based on some configurable text that the user enters.

What I have is the following dialog.

 ______________                _____________         _____________      _____________            
|        CTRL1           |             |        CTRL2           |    |          CTRL3         |   |      CTRL4           |
 ---------------------                ----------------------     ----------------------      --------------------

CTRL2 is the dynamicly controled button the other three controls(CTRL2,CTRL3,CTRL4) are staticly located.

1) I have to resize CTRL2 button based on the text that was dynamically defined by the user
2) The button has to be placed next to CTRL3, but the same distance that is present between CTRL3 & CTRL4.
3) The Button can not grow to overlapp CTRL1.

What I have been able to figure out is the:
* Height of the button
* Y position of the button

SetWindowPos(hWnd,
    HWND hWndInsertAfter,
    int X,   //UNKNOWN
    398,  //Y of position...Known
    int cx,  //UKNOWN
    25,  //Height of button...Known
    SWP_SHOWWINDOW | SWP_NOZORDER | SWP_NOACTIVATE
);

Any insight into this issue will be greatly appreciated.
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>>>> RECT rc;
>>>> GetTextExtentPoint32(hdcDlg, pszText, _tcslen(pszText,&rc);
The GetTextExtentPoint32 takes a LPSIZE as last argument and not a LPRECT (if my doc was correct). I wouldn't recommend for _tcslen beside you would use the 'T' switch for UNICODE/ANSI consequently in your prog.

>>>> _tcslen(pszText
There is a missing ')'

>>>> if (GetTextExtenPoint32(hdc, szText, strlen(szText), &size))
another typo: GetTextExtentPoint32

Author

Commented:
I would like to thank jkr and Alex for you help.  That was the exact API I was searching for.

Best Regards,
-Jim

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