如何建立靜態控件
本節中的範例示範如何建立動畫靜態控件。
您需要知道的事項
技術
必要條件
- C/C++
- Windows 使用者介面程序設計
指示
建立靜態控件
下列程式代碼範例會使用定時器和 STM_SETICON 訊息,在對話框中建立靜態圖示控件的動畫效果。
#define MAXICONS 3
#define HALF_SECOND 500
INT_PTR CALLBACK StaticDlgProc(HWND hDlg, UINT message, WPARAM wParam,
LPARAM lParam)
{
static HICON aIcons[MAXICONS];
static UINT i = 0;
static UINT idTimer = 1;
switch (message)
{
case WM_INITDIALOG:
// Load the icon resources. g_hInst is the global instance handle.
aIcons[i] = LoadIcon(g_hInst, MAKEINTRESOURCE(IDI_ICON1));
aIcons[++i] = LoadIcon(g_hInst, MAKEINTRESOURCE(IDI_ICON2));
aIcons[++i] = LoadIcon(g_hInst, MAKEINTRESOURCE(IDI_ICON3));
// Reset the array index.
i = 0;
// Set a timer.
SetTimer(hDlg, idTimer, HALF_SECOND, (TIMERPROC) NULL);
return TRUE;
case WM_TIMER:
// Use STM_SETICON to associate a new icon with the static icon
// control whenever a WM_TIMER message is received.
SendDlgItemMessage(hDlg, IDC_STATIC_ICON, STM_SETICON,
(WPARAM) aIcons[i], 0);
// Reset the array index, if necessary.
if (++i == MAXICONS)
i = 0;
return 0;
case WM_COMMAND:
if (wParam == IDOK
|| wParam == IDCANCEL)
{
EndDialog(hDlg, TRUE);
}
return TRUE;
case WM_DESTROY:
KillTimer(hDlg, idTimer);
// Note that it is not necessary to call DestroyIcon here. LoadIcon
// obtains a shared icon, which is valid as long as the module from
// which it was loaded is in memory.
return 0;
}
return FALSE;
UNREFERENCED_PARAMETER(lParam);
}
備註
靜態圖示控件的標識碼 (IDI_STATIC_ICON) 定義於全域頭檔中,並從應用程式資源載入圖示。
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