C / C++ / MFC

Code-o-mat wrote:

Apparently CComboBox::GetComboBoxInfo[^] can give you a handle to the list control.

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COMBOBOXINFO cbi = {sizeof(COMBOBOXINFO)};
if(GetComboBoxInfo(&cbi))
{
	HWND hwndListBox = cbi.hwndList;
	LRESULT lNum = SendMessage(CB_GETCOUNT,0,0);
	LRESULT lWidth = SendMessage(CB_GETDROPPEDWIDTH,0,0);
	LRESULT lHeight = SendMessage(CB_GETITEMHEIGHT,0,0);
	::SetWindowPos(cbi.hwndList,0,0,0,lWidth,lNum+1 * lHeight,SWP_NOMOVE | SWP_NOOWNERZORDER | SWP_FRAMECHANGED);
}

COMBOBOXINFO cbi = { sizeof(COMBOBOXINFO) };
if(GetComboBoxInfo(GetComboBoxCtrl()->GetSafeHwnd(), &cbi))
{
	CRect rect;
	::GetWindowRect(cbi.hwndList, &rect);
	rect.bottom = rect.top + GetCount()*GetItemHeight(0) + 2;
	::SetWindowPos(cbi.hwndList, 0, 0, 0, rect.Width(), rect.Height(), SWP_NOMOVE | SWP_NOZORDER);
}

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Moak wrote:

There are two thing I am not sure about and I would like to ask: In the height calculation I needed to add 2 pixels for the border, is there a better alternative than using a magic value?

Moak wrote:

I didn't understand from MSDN what SWP_NOOWNERZORDER [^] is for? I replaced it with SWP_NOZORDER, hope this is okay.

Randor wrote:

You can check if SM_CYFIXEDFRAME returns the correct value. Interestingly enough I did not have this problem

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Moak wrote:

Btw, GetCount()[^] returns not a zero based index.

CRect Outer, Inner;

list.GetWindowRect(&Outer);
list.GetClientRect(&Inner);
list.ClientToScreen(&Inner);

int LeftBorder   = Inner.left   - Outer.left;
int TopBorder    = Inner.top    - Outer.top;
int RightBorder  = Outer.right  - Inner.right;
int BottomBorder = Outer.bottom - Inner.bottom;

char message [] = "Hello";

egerving wrote:

if you define char x[112] you then can't say x="Hello" because I guess x must be 112 chacters

fprintf(fileHandle, "%-2d%-4d/%-2d/%-2d%-2d%-2d:%-2d%-20s                                        %-1d%-11.2f%-11d%%-10d\n", firstCode, year, month, day, hour, minute, second, barcode, secondCode, decimal, firstNumber, secondNumber);

egerving wrote:

...and if you define char x[112] you then can't say x="Hello" because I guess x must be 112 chacters.

char x[112] = "Hello";

char x[112];
x = "Hello";

egerving wrote:

...if you want use a variable and assign it to different values and/or concatenat different values to it what do you do.