change caption, string to a number of a double variable

string representation of a specified integer value

 SetDlgItemInt function

Sets the text of a control in a dialog box to the string representation of a specified integer value.

Syntax

C++

BOOL WINAPI SetDlgItemInt(
  _In_ HWND hDlg,
  _In_ int  nIDDlgItem,
  _In_ UINT uValue,
  _In_ BOOL bSigned
);

Parameters

hDlg [in]

Type: HWND
A handle to the dialog box that contains the control.

nIDDlgItem [in]

Type: int
The control to be changed.

uValue [in]

Type: UINT
The integer value used to generate the item text.

bSigned [in]

Type: BOOL
Indicates whether the uValue parameter is signed or unsigned. If this parameter is TRUE, uValue is signed. If this parameter is TRUE and uValue is less than zero, a minus sign is placed before the first digit in the string. If this parameter is FALSE, uValue is unsigned.

Return value

Type: BOOL
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information, call GetLastError.

Remarks

To set the new text, this function sends a WM_SETTEXT message to the specified control.

Requirements

Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Header	Winuser.h (include Windows.h)
Library	User32.lib
DLL	User32.dll

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I want to change IDC_EDIT1, caption to a number of a double variable.
I used "_itoa" for normal integers, but how am i suppose to throw double value in it? 

Example of what i was using

Code:

SetDlgItemText(hWnd, IDC_EDIT1, _itoa((Value), buf, 10));

answer:

sprintf, swprintf (CRT)  to write the data to the string or  SetDlgItemInt

lol, something tells me you're trying to set the EXP value!
Nuh Uh. Retrieving. Hes trying to convert # to $ so yea.


You could extract of the decimal places from the double, multiply it by (10 ^ number of decimal places), strcat() it to the whole number part of the decimal, then set that string with SetDlgItemText.

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See also

Reference

GetDlgItemInt

SetDlgItemText

WM_SETTEXT

Conceptual

Dialog Boxes