问题描述
根据我看到的一切，当我在应用程序窗口中单击左键时，下面的C ++程序应该从托盘图标显示一个气球工具提示，但它不工作。任何人都可以告诉我我丢失了什么？
According to everything I've seen, the following C++ program should be displaying a balloon tool tip from the tray icon when I left-click in the application window, yet it's not working. Can anyone tell me what I'm missing?
这是在XP上与6.0版Shell32.dll（用DllGetVersion验证）。
This is on XP with version 6.0 of Shell32.dll (verified with DllGetVersion).
谢谢！
#include "stdafx.h"
#include "shellapi.h"
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);
int APIENTRY _tWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow)
{
MSG msg;
WNDCLASS wc;
memset(&wc, 0, sizeof(wc));
wc.lpfnWndProc = WndProc;
wc.hInstance = hInstance;
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
wc.lpszClassName = "sysTrayTest";
RegisterClass(&wc);
HWND hWnd = CreateWindow("sysTrayTest", "",
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, 0, 500, 500,
NULL, NULL, hInstance, NULL);
if (hWnd)
{
ShowWindow(hWnd, nCmdShow);
while (GetMessage(&msg, NULL, 0, 0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
return 0;
}
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_DESTROY:
{
NOTIFYICONDATA nid;
memset(&nid, 0, sizeof(NOTIFYICONDATA));
nid.cbSize = sizeof(NOTIFYICONDATA);
nid.hWnd = hWnd;
nid.uID = 1;
Shell_NotifyIcon(NIM_DELETE, &nid);
PostQuitMessage(0);
}
break;
case WM_CREATE:
{
NOTIFYICONDATA nid;
memset(&nid, 0, sizeof(NOTIFYICONDATA));
nid.cbSize = sizeof(NOTIFYICONDATA);
nid.hWnd = hWnd;
nid.uID = 1;
nid.uFlags = NIF_ICON | NIF_MESSAGE | NIF_TIP;
nid.uCallbackMessage = WM_USER + 200;
nid.hIcon = LoadIcon(NULL, IDI_INFORMATION);
lstrcpy (nid.szTip, "Test Tip");
Shell_NotifyIcon(NIM_ADD, &nid);
}
break;
case WM_LBUTTONDOWN:
{
NOTIFYICONDATA nid;
memset(&nid, 0, sizeof(NOTIFYICONDATA));
nid.cbSize = sizeof(NOTIFYICONDATA);
nid.hWnd = hWnd;
nid.uID = 1;
nid.uFlags = NIF_INFO;
lstrcpy(nid.szInfo, "Test balloon tip");
lstrcpy(nid.szInfoTitle, "Test Title");
nid.dwInfoFlags = NIIF_INFO;
nid.uTimeout = 15000;
Shell_NotifyIcon(NIM_MODIFY, &nid);
}
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return 0;
}
推荐答案
。由于某些原因，我有...
Bah, I figured it out. For some reason with the headers I have...
sizeof（NOTIFYICONDATA）== 508
sizeof(NOTIFYICONDATA) == 508
..
NOTIFYICONDATA _ V3 _ SIZE == 504
NOTIFYICONDATA _ V2 _ SIZE == 488
NOTIFYICONDATA _ V1 _ SIZE == 88
NOTIFYICONDATA_V3_SIZE == 504
NOTIFYICONDATA_V2_SIZE == 488
NOTIFYICONDATA_V1_SIZE == 88
如果我指定V2或V3而不是sizeof（NOTIFYICONDATA），气球提示就显示得很好。
If I specify either V2 or V3 instead of sizeof(NOTIFYICONDATA) the balloon tips show up just fine.
这篇关于为什么Shell_NotifyIcon气球提示工作？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！