Die Symbolleiste flackert, wenn im Hauptfenster zu viele untergeordnete Fenster vorhanden sind [geschlossen] ⇐ C++

[Guest]

In einigen Fällen muss ich möglicherweise viele untergeordnete Fenster erstellen. Wenn im Hauptfenster zu viele Handles für untergeordnete Fenster vorhanden sind und die Größe des Fensters geändert wird, flackert die Symbolleiste, selbst wenn ich WS_CLIPCHILDREN im übergeordneten Fenster verwende.
Videobeispiel :
https://github.com/user-attachments/ass ... 2a4db83e7f
In einigen anderen regulären Anwendungen gibt es auch viele untergeordnete Fenster. Wenn beispielsweise bei Navicat die Fenstergröße geändert wird, flackert die Navicat-Symbolleiste nicht. Ich denke, dass es in Win32-Programmen eine Möglichkeit geben muss, dies zu tun, aber ich habe die Antwort nicht gefunden.
Mein Code:

Code: Select all

#include 
#include 
#include 
#include 
#include 
#include 

// Enabling Visual Styles
#pragma comment(linker,"\"/manifestdependency:type='win32' \
name='Microsoft.Windows.Common-Controls' version='6.0.0.0' \
processorArchitecture='*' publicKeyToken='6595b64144ccf1df' language='*'\"")

#pragma comment(lib, "comctl32")

#define IDB_TOOLBAR_START 301
#define IDB_TOOLBAR_STOP 302
#define IDB_TOOLBAR_TDSET 303
#define IDB_TOOLBAR_XTSET 304
#define IDB_TOOLBAR_HELP 306

HWND m_hToolBar = nullptr;
LRESULT CreateToolBar(HWND hWnd)
{
LPITEMIDLIST pidl;
SHGetSpecialFolderLocation(hWnd, CSIDL_DESKTOP, &pidl);
SHFILEINFO sfi = { 0 };

HIMAGELIST hImageList = (HIMAGELIST)::SHGetFileInfo((LPCTSTR)pidl, 0, &sfi, sizeof(sfi), SHGFI_PIDL | SHGFI_SYSICONINDEX | SHGFI_SMALLICON);

m_hToolBar = CreateWindow(TOOLBARCLASSNAME, NULL,
WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN, 0, 0, 0, 0, hWnd, (HMENU)1,
NULL, NULL);

::SendMessage(m_hToolBar, TB_SETIMAGELIST, 0, (LPARAM)hImageList);

srand((unsigned int)time(NULL));
const UINT uButtonNums = 5;
UINT uImgCount = ImageList_GetImageCount(hImageList);
TBBUTTON tbButtons[uButtonNums] = {
{MAKELONG(rand() % uImgCount, 0), IDB_TOOLBAR_START, TBSTATE_ENABLED, TBSTYLE_BUTTON | BTNS_AUTOSIZE, {0}, 0, (INT_PTR)TEXT("aaa")},
{MAKELONG(rand() % uImgCount, 0), IDB_TOOLBAR_STOP, TBSTATE_ENABLED, TBSTYLE_BUTTON | BTNS_AUTOSIZE, {0}, 0, (INT_PTR)TEXT("bbb")},
{MAKELONG(rand() % uImgCount, 0), IDB_TOOLBAR_TDSET, TBSTATE_ENABLED, TBSTYLE_BUTTON | BTNS_AUTOSIZE, {0}, 0, (INT_PTR)TEXT("ccc")},
{MAKELONG(rand() % uImgCount, 0), IDB_TOOLBAR_XTSET, TBSTATE_ENABLED, TBSTYLE_BUTTON | BTNS_AUTOSIZE, {0}, 0, (INT_PTR)TEXT("ddd")},
{MAKELONG(rand() % uImgCount, 0), IDB_TOOLBAR_HELP, TBSTATE_ENABLED, TBSTYLE_BUTTON | BTNS_AUTOSIZE, {0}, 0, (INT_PTR)TEXT("eee")} };

::SendMessage(m_hToolBar, TB_BUTTONSTRUCTSIZE, (WPARAM)sizeof(TBBUTTON), 0);
::SendMessage(m_hToolBar, TB_ADDBUTTONS, (WPARAM)uButtonNums, (LPARAM)&tbButtons);

::SendMessage(m_hToolBar, TB_AUTOSIZE, 0, 0);
::SendMessage(m_hToolBar, TB_SETSTYLE, 0, TBSTYLE_FLAT | CCS_TOP);
//::GetWindowRect(m_hToolBar, &m_rcToolBar);
::ShowWindow(m_hToolBar, true);
return 0;
}
std::vector hWndBtn;
LRESULT CALLBACK WinProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
switch (uMsg) {
case WM_CREATE:
{
CreateToolBar(hWnd);
for (int i = 0; i < 100; i++)
{
hWndBtn.push_back(CreateWindow(TEXT("BUTTON"), TEXT("ButtonN"), WS_VISIBLE | WS_CHILD, 100, 100, 300, 200, hWnd, NULL, NULL, NULL));
}
break;
}
case WM_PAINT:
{
break;
}
case WM_SIZE:
{
SendMessage(m_hToolBar, uMsg, wParam, lParam);
INT width = max(0, LOWORD(lParam));
INT height = max(0, HIWORD(lParam));

int y = 100;
int spacing = 30;
HDWP hDWP = BeginDeferWindowPos((int)hWndBtn.size());
for (int i = 0; i < hWndBtn.size();  ++i)
{
height = 50;
DeferWindowPos(
hDWP,
hWndBtn[i],
NULL,
100, y,
width - 200, height,
SWP_NOZORDER
);
y = y + height + spacing;
}
EndDeferWindowPos(hDWP);
break;
}
case WM_CLOSE:
DestroyWindow(hWnd);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
}
return DefWindowProc(hWnd, uMsg, wParam, lParam);
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, LPSTR, BOOL) {
WNDCLASS wc = { 0 };
wc.lpszClassName = TEXT("wndclass");
wc.style = CS_HREDRAW | CS_VREDRAW;
wc.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.lpfnWndProc = WinProc;
RegisterClass(&wc);

HWND hWnd = CreateWindow(wc.lpszClassName, TEXT("Window"), WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN, CW_USEDEFAULT, CW_USEDEFAULT, 400, 300, 0, 0, hInstance, 0);
if (hWnd == NULL) return 1;
ShowWindow(hWnd, SW_SHOWNORMAL);
MSG msg = { 0 };
while (GetMessage(&msg, 0, 0, 0)) {
DispatchMessage(&msg);
}
return 0;
}