Easy Win 32

Combo Box Class – cEasyComboBox

cEasyComboBox Public Members:

HWND combobox;

cEasyComboBox Functions:

Functions to modify and/or setup the Combo Box (HWND combobox):

int ChangeComboBoxInstance(HINSTANCE)

int ChangeComboBoxParent(HWND)

int ChangeComboBoxMenu(HMENU)

int ChangeComboBoxPos(int x, int y, int width, int height)

int ChangeComboBoxStyles(DWORD dwstyle,DWORD dwexstyle)

int ChangeComboBoxName(LPCTSTR)

As a general rule this functions return 1 on success, 0 on error.

After created functions (They help to handle the Combo Box):

DWORD GetSelectedItem()

Returns the Zero-Based User Selected Item, if any.

int SetSelectedItem(DWORD index)

UINT NumberofItems()

Returns the Number of Items of the Combo Box.

DWORD GetItemData(DWORD index)

Returns the Data associated with the Item in the Combo Box (Index is Zero-Based).

INT SetItemData(DWORD index,DWORD data)

INT FindItem(LPCTSTR name)

Returns the Index of the Item that matches the name.

void ResetContent()

Deletes all the Items of the Combo Box.

int AddItem(LPCTSTR name,DWORD data)

Adds an item to the Combo Box and associates the variable data to it.

int DeleteItem(LPCTSTR name)

Deletes the Item that Matches that name.

As a general rule, functions that use Set (Example: SetItemData), return 1 on success, 0 on error.

Other Functions:

void InitComboBox()

Initializes the Combo Box Class with these values:

lpWindowName="ComboBox";

dwStyle=0;

x=10;

y=10;

nWidth=300;

nHeight=300;

hWndParent=NULL;

hMenu=NULL;

hInst1=programInstance;

_combocreated_=FALSE;

HWND Create_ComboBox(HWND AuxiliarWindow)

On success it returns the handle of the ComboBox (you don’t have to store it, it is already stored in the public class member “combobox”).

On error it return NULL.

int Destroy_ComboBox()

Destroys the ComboBox. On error returns 0, else non-zero.

LONG GetComboBoxId()

HWND GetComboBoxParent()

DWORD GetComboBoxExStyle()

DWORD GetComboBoxStyle()

HINSTANCE GetComboBoxInstance()

Returns a Combo Box Property according to the name of the function.

BOOL Is_Enabled()

void Disable_ComboBox()

void Enable_ComboBox()

cEasyComboBox Private Members:

DWORD dwExStyle; // extended window style

LPCTSTR lpWindowName; // pointer to window name

DWORD dwStyle; // window style

int x; // horizontal position of window

int y; // vertical position of window

int nWidth; // window width

int nHeight; // window height

HWND hWndParent; // handle to parent or owner window

HMENU hMenu; // handle to menu or child-window identifier

HANDLE hInst1; // handle to application instance

BOOL _combocreated_;