virtual void OnPaint()
{
this->DrawWidgets();
DrawButtonFrame(0, 0, this->width, this->height / 2 - 1, STR_BUTTON_OK);
DrawButtonFrame(0, this->height / 2, this->width, this->height / 2, STR_BUTTON_CANCEL);
}
//Window procedure of bitmap button control.
static DWORD BmpButtonWndProc(HANDLE hWnd,UINT message,WORD wParam,DWORD lParam)
{
HANDLE hDC = GetClientDC(hWnd);
__BITMAP_BUTTON* pButton = NULL;
__WINDOW_MESSAGE msg;
if(NULL == hWnd)
{
return 0;
}
pButton = (__BITMAP_BUTTON*)GetWindowExtension(hWnd);
if(NULL == pButton)
{
return DefWindowProc(hWnd,message,wParam,lParam);
}
switch(message)
{
case WM_CREATE:
DrawButtonNormal(hDC,pButton);
DrawButtonFrame(hDC,pButton);
break;
case WM_DRAW:
DrawButtonNormal(hDC,pButton);
DrawButtonFrame(hDC,pButton);
break;
case WM_LBUTTONDOWN:
if(pButton->dwBmpBtnStatus == BUTTON_STATUS_PRESSED) //Already in pressed status.
{
break;
}
pButton->dwBmpBtnStatus = BUTTON_STATUS_PRESSED;
DrawButtonFrame(hDC,pButton);
break;
case WM_MOUSEMOVE:
if(pButton->dwBmpBtnStatus == BUTTON_STATUS_PRESSED) //Button is hold.
{
pButton->dwBmpBtnStatus = BUTTON_STATUS_NORMAL;
DrawButtonFrame(hDC,pButton);
}
break;
case WM_LBUTTONUP:
if(pButton->dwBmpBtnStatus == BUTTON_STATUS_NORMAL) //Already in normal status.
{
break;
}
pButton->dwBmpBtnStatus = BUTTON_STATUS_NORMAL;
DrawButtonFrame(hDC,pButton);
//Send button pressed message to it's parent.
msg.hWnd = GetParentWindow(hWnd);
msg.message = WM_COMMAND;
msg.wParam = pButton->dwBmpButtonId;
msg.lParam = 0;
SendWindowMessage(msg.hWnd,&msg);
break;
case WM_CLOSE:
case WM_DESTROY:
//Release the common control specific resource,the system level resource,
//such as window resource,will be released by DefWindowProc routine.
KMemFree(pButton,KMEM_SIZE_TYPE_ANY,0);
SetWindowExtension(hWnd,NULL);
break;
}
return DefWindowProc(hWnd,message,wParam,lParam);
}
