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C-/C++-Quelltext

class cTest1
{
public:
     void SetChecked(bool p1);

private:
     bool Checked;
}
void cTest1::SetChecked(bool p1)
{
     Checked = p1;
}

class cTest2
{
public:
     cTest1 GetKlasse1();

private:
     cTest1 Klasse1;
}
cTest1 cTest2::GetKlasse1()
{
     return Klasse1;
}

int main()
{
     cTest2 Klasse2;
     Klasse2.GetKlasse1().SetChecked(true);

     return (0);
}

C-/C++-Quelltext

class BitmapButton
{
public:
    HWND CreateButton(HWND hWnd, HINSTANCE hInstance, int id, int x_pos, int y_pos,LPCSTR up, LPCSTR hover, LPCSTR down);
    void PaintButton();
    int GetButtonState();

    //Konstruktor
    BitmapButton();
    //Destruktor
    ~BitmapButton();
        
private:        
    void SetButtonBitmapPressed();
    void SetButtonBitmapHighlight();
    void SetButtonBitmapNormal();

    bool CheckMouseOver();

    HBITMAP ButtonNormal;
    HBITMAP ButtonPressed;
    HBITMAP ButtonMouseOver;
    HWND hWnd;
    bool pressed;

    //BitmapStates 0=Up, 1=Hover, 2=Down
    int BitmapState;
};

C-/C++-Quelltext

#include "Buttons.h"

BitmapButton::BitmapButton()
{
    BitmapState=5;
}

BitmapButton::~BitmapButton()
{
    DestroyWindow(hWnd);
    DeleteObject(ButtonNormal);
    DeleteObject(ButtonPressed);
    DeleteObject(ButtonMouseOver);
    DeleteObject(hWnd);
}

bool BitmapButton::CheckMouseOver()
{
    POINT MausPos; 
    RECT Rect;

    GetWindowRect(hWnd,&Rect);
    GetCursorPos(&MausPos);
    if(hWnd != NULL)    
    {
        if(MausPos.x >Rect.left && MausPos.x < Rect.right && MausPos.y < Rect.bottom && MausPos.y > Rect.top)   return true;
        else    return false;
    }
    else    return false;
}

void BitmapButton::SetButtonBitmapPressed()
{
    SendMessage(hWnd, STM_SETIMAGE, IMAGE_BITMAP, (LPARAM)ButtonPressed);
}

void BitmapButton::SetButtonBitmapHighlight()
{
    SendMessage(hWnd, STM_SETIMAGE, IMAGE_BITMAP, (LPARAM)ButtonMouseOver);
}

void BitmapButton::SetButtonBitmapNormal()
{
    SendMessage(hWnd, STM_SETIMAGE, IMAGE_BITMAP, (LPARAM)ButtonNormal);
}

HWND BitmapButton::CreateButton(HWND hWindow, HINSTANCE hInstance, int id, int x_pos, int y_pos,LPCSTR up, LPCSTR hover, LPCSTR down)
{
    this->ButtonNormal = LoadBitmap(GetModuleHandle(NULL), up);
    this->ButtonPressed = LoadBitmap(GetModuleHandle(NULL), down);
    this->ButtonMouseOver = LoadBitmap(GetModuleHandle(NULL), hover);

    this->hWnd = CreateWindow   ("STATIC",NULL,
                                WS_VISIBLE | WS_CHILD | SS_BITMAP,
                                x_pos, y_pos, 1, 1,
                                hWindow, (HMENU)id, hInstance, NULL);

    this->SetButtonBitmapNormal();
    return hWindow;
}

void BitmapButton::PaintButton()
{
    if(CheckMouseOver())
    {   
        if(GetAsyncKeyState (VK_LBUTTON) & 0x8000)
        {
            if(BitmapState != 2)
            {
                SetButtonBitmapPressed();
            }
            BitmapState = 2;
        }
        else if(BitmapState == 2)
        {
                SetButtonBitmapHighlight();
                BitmapState = 1;
        }
        else
        {
            if(BitmapState != 1)
            {
                SetButtonBitmapHighlight();
                BitmapState = 1;
            }
        }
    }
    else
    {   
        if(BitmapState != 0)
        {
            SetButtonBitmapNormal();
            BitmapState = 0;
        }
    }
}

int BitmapButton::GetButtonState()
{
    if(CheckMouseOver())
    {   
        if(GetAsyncKeyState (VK_LBUTTON) & 0x8000)
        {
            pressed = true;
            return (0);
        }
        else if(pressed == true)
        {
            pressed = false;
            return (1);
        }
        else
        {
            return (2);
        }
    }
    else return (0);
}