自绘一个位图按钮,重载了DrawItem,设置了按钮在普通状态和按下状态的不同的样式。但是我发现在快速点击按钮的时候,它的按下和弹起反应不是很即时。我用了一下CButtonST,它的好像没有这个问题。这是怎么造成的呢?
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2.另外不仅仅是重载DrawItem就可以的,你还得响应BN_CLICKED消息,在内部调用Invalidate,刷新按钮
我把DrawItem全部注释掉了,这样只能看到灰色的一片,可我点击的时候它还是反应不过来啊!
是不是没有按钮没有刷新?
你有没有响应BN_CLICKED消息,在内部调用Invalidate
void CBmpDlg::OnMouseMove(UINT nFlags, CPoint point)
{
CWnd * pWnd;
HCURSOR MyCursor;
CRgn m_regionPower; //Region of POWER Button
CRgn m_regionPlay; //Region of PLAY Button
//建立位图按钮的矩形区域
m_regionPower.CreateEllipticRgnIndirect(CRect(27,56,72,92));
m_regionPlay.CreateEllipticRgnIndirect(CRect(78,56,120,92));
CString ShowString0 = "鼠标的光标在位图按钮上!!!";
… … … …
m_bPlay = FALSE;
m_bPower= FALSE;
if (m_regionPower.PtInRegion(point)) //鼠标落在位图按钮之上
{
m_bPower = TRUE;
//将位图按钮设置成获得输入状态
pWnd= GetDlgItem(IDC_BUTTON_POWER);
pWnd->SetFocus();
SetCapture();
InputEdit().SetWindowText(ShowString0);
InputEdit().ShowWindow(TRUE);
//将鼠标光标变成小手形状
MyCursor = AfxGetApp()->LoadCursor(IDC_MYCURSOR);
::SetCursor(MyCursor);
VERIFY(m_Play.LoadBitmaps("PLAYU","PLAYD","PLAYF","PLAYX"));
m_bPressedPlay = FALSE;
return;
}
if (m_regionPlay.PtInRegion(point)) //鼠标落在位图按钮之上
{
if (m_bPowerOn) { //如果电源已被开启
m_bPlay = TRUE;
pWnd= GetDlgItem(IDC_BUTTON_PLAY);
pWnd->SetFocus();
SetCapture();
InputEdit().SetWindowText(ShowString0);
InputEdit().ShowWindow(TRUE);
MyCursor = AfxGetApp()->LoadCursor(IDC_MYCURSOR);
::SetCursor(MyCursor);
VERIFY(m_Power.LoadBitmaps("POWERONU","POWEROND","POWERONF"));
}
else { //如果电源已被关闭
ReleaseCapture();
InputEdit().SetWindowText(ShowString0+ShowString2);
InputEdit().ShowWindow(TRUE);
VERIFY(m_Power.LoadBitmaps("POWEROFU","POWEROFD","POWEROFF"));
}
m_bPressedPower= FALSE;
return;
}
//鼠标落在所有的位图按钮之外
ReleaseCapture();
InputEdit().SetWindowText(ShowString1);
InputEdit().ShowWindow(TRUE);
pWnd= GetDlgItem(IDOK);
pWnd->SetFocus();
VERIFY(m_Play.LoadBitmaps("PLAYU","PLAYD","PLAYF","PLAYX"));
if (m_bPowerOn)
VERIFY(m_Power.LoadBitmaps("POWERONU","POWEROND","POWERONF"));
else
VERIFY(m_Power.LoadBitmaps("POWEROFU","POWEROFD","POWEROFF"));
m_bPressedPlay = FALSE;
m_bPressedPower= FALSE;
CDialog::OnMouseMove(nFlags, point);
}
void CBmpDlg::OnLButtonDown(UINT nFlags, CPoint point)
{
CWnd *pWnd;
if (m_bPlay && m_bPowerOn) {
// Change Focus so as to Change the bitmap of m_Play
pWnd= GetDlgItem(IDOK);
pWnd->SetFocus();
VERIFY(m_Play.LoadBitmaps("PLAYD"));
m_Play.UpdateWindow();
m_Play.Invalidate(TRUE);
OnButtonPlay();
m_bPressedPlay = TRUE;
}
if (m_bPower== TRUE) {
// Change Focus so as to Change the bitmap of m_Power
pWnd= GetDlgItem(IDOK);
pWnd->SetFocus();
if (m_bPowerOn)
VERIFY(m_Power.LoadBitmaps("POWEROND"));
else
VERIFY(m_Power.LoadBitmaps("POWEROFD"));
m_Power.UpdateWindow();
m_Power.Invalidate(TRUE);
OnButtonPower();
m_bPressedPower = TRUE;
}
CDialog::OnLButtonDown(nFlags, point);
}
void CBmpDlg::OnLButtonUp(UINT nFlags, CPoint point)
{
CWnd * pWnd;
if (m_bPressedPlay == TRUE) {
pWnd= GetDlgItem(IDOK);
pWnd->SetFocus();
VERIFY(m_Play.LoadBitmaps("PLAYF"));
m_Play.UpdateWindow();
m_Play.Invalidate(TRUE);
m_bPressedPlay = FALSE;
}
if (m_bPressedPower == TRUE) {
pWnd= GetDlgItem(IDOK);
pWnd->SetFocus();
if (m_bPowerOn)
VERIFY(m_Power.LoadBitmaps("POWERONF"));
else
VERIFY(m_Power.LoadBitmaps("POWEROFF"));
m_Power.UpdateWindow();
m_Power.Invalidate(TRUE);
m_bPressedPower = FALSE;
}
CDialog::OnLButtonUp(nFlags, point);
} 你可以参照一下
LRESULT CXXButton::DefWindowProc(UINT message, WPARAM wParam, LPARAM lParam)
{
if (message == WM_LBUTTONDBLCLK)
{
message = WM_LBUTTONDOWN; //在这里屏蔽双击消息
}
return CButton::DefWindowProc(message, wParam, lParam);
} // End of DefWindowProc