c - 如何使用子元素制作选项卡控件?
问题描述
我正在学习 WINAPI,我读到 C# 的 TabControl 控件没有子控件,因此您必须自己创建元素并显示/隐藏。我读到它可以通过在选项卡页面区域内绘制一个对话框来完成,所以我去创建一个无边框对话框作为选项卡控件的子控件,使其具有 C# 的效果。但我还是做不到。我的对话框是浮动的,而不是选项卡控件的子控件。我不知道要在标签页中设置它,我尝试将hWndParent
标签控件的 HWND 和WS_EX_TOOLWINDOW | WS_EX_CONTROLPARENT
标志设置在其中,dwExStyle
但仍然浮动在标签控件上。欢迎使用不同的方法来解决这个问题。我正在创建这样的选项卡控件:
void AddTabControl(HWND hwnd)
{
hTab = CreateWindowW(WC_TABCONTROLW, NULL,
WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | WS_TABSTOP,
0, 30, 250, 250,
hwnd,
(HMENU) 9,
NULL,
NULL);
InsertTabItem(hTab, 10, L"A");
InsertTabItem(hTab, 11, L"B");
}
void InsertTabItem(HWND tabHwnd, UINT id, LPWSTR text)
{
TCITEMW tci = {0};
tci.mask = TCIF_TEXT;
tci.pszText = text;
tci.cchTextMax = lstrlenW(text);
if(SendMessage(tabHwnd, TCM_INSERTITEMW, id, (LPARAM) &tci) == -1) {
MessageBox(NULL,
L"couldn't create the new tab page",
L"tab errror",
MB_OK | MB_ICONERROR);
}
}
和这样的对话框:
void CreateDialogBox(HWND hwnd)
{
CreateWindowExW(WS_EX_TOOLWINDOW | WS_EX_CONTROLPARENT, // WS_EX_TOOLWINDOW to hide window from ALT+TAB
L"DialogClass", L"Dialog Box",
WS_VISIBLE | WS_POPUP | WS_SYSMENU,
100, 100, 400, 150,
hTab, NULL, ghInstance, NULL
);
}
结果是:
预期的结果(由 C# 制作,例如,忽略颜色差异,稍后我将修复此问题):
这是完整的代码:
#pragma comment(lib, "user32.lib")
#pragma comment(lib, "Comctl32.lib")
#define UNICODE
#include <windows.h>
#include <Commctrl.h>
#include <strsafe.h>
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK DialogProc(HWND, UINT, WPARAM, LPARAM);
void CreateDialogBox(HWND);
void RegisterDialogClass(HWND);
void AddTabControl(HWND hwnd);
void InsertTabItem(HWND tabHwnd, UINT id, LPWSTR text);
HINSTANCE ghInstance;
HWND mainWindow;
HWND hTab;
int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
PWSTR pCmdLine, int nCmdShow) {
MSG msg = {0};
HWND hwnd;
WNDCLASSW wc = {0};
wc.lpszClassName = L"Window";
wc.hInstance = hInstance;
wc.hbrBackground = GetSysColorBrush(COLOR_3DFACE);
wc.lpfnWndProc = WndProc;
RegisterClassW(&wc);
hwnd = CreateWindowW(wc.lpszClassName, L"Window",
WS_OVERLAPPEDWINDOW | WS_VISIBLE,
100, 100, 500, 350, NULL, NULL, hInstance, NULL);
mainWindow = hwnd;
ghInstance = hInstance;
while( GetMessage(&msg, NULL, 0, 0)) {
DispatchMessage(&msg);
}
return (int) msg.wParam;
}
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch(msg)
{
case WM_CREATE:
RegisterDialogClass(hwnd);
AddTabControl(hwnd);
CreateDialogBox(hwnd);
break;
case WM_COMMAND:
CreateDialogBox(hwnd);
break;
case WM_DESTROY:
{
PostQuitMessage(0);
return 0;
}
}
return DefWindowProcW(hwnd, msg, wParam, lParam);
}
LRESULT CALLBACK DialogProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch(msg) {
case WM_CREATE:
CreateWindowW(L"button", L"A",
WS_VISIBLE | WS_CHILD ,
50, 50, 80, 25, hwnd, (HMENU) 1, NULL, NULL);
CreateWindowW(L"button", L"B",
WS_VISIBLE | WS_CHILD ,
150, 50, 80, 25, hwnd, (HMENU) 2, NULL, NULL);
CreateWindowW(L"button", L"C",
WS_VISIBLE | WS_CHILD ,
250, 50, 80, 25, hwnd, (HMENU) 3, NULL, NULL);
break;
case WM_COMMAND:
DestroyWindow(hwnd);
break;
case WM_CLOSE:
DestroyWindow(hwnd);
break;
}
return (DefWindowProcW(hwnd, msg, wParam, lParam));
}
void RegisterDialogClass(HWND hwnd)
{
WNDCLASSEXW wc = {0};
wc.cbSize = sizeof(WNDCLASSEXW);
wc.lpfnWndProc = (WNDPROC) DialogProc;
wc.hInstance = ghInstance;
wc.hbrBackground = GetSysColorBrush(COLOR_3DFACE);
wc.lpszClassName = L"DialogClass";
RegisterClassExW(&wc);
}
void CreateDialogBox(HWND hwnd)
{
CreateWindowExW(WS_EX_TOOLWINDOW | WS_EX_CONTROLPARENT, // WS_EX_TOOLWINDOW to hide window from ALT+TAB
L"DialogClass", L"Dialog Box",
WS_VISIBLE | WS_POPUP | WS_SYSMENU,
100, 100, 400, 150,
hTab, NULL, ghInstance, NULL
);
}
void AddTabControl(HWND hwnd)
{
hTab = CreateWindowW(WC_TABCONTROLW, NULL,
WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | WS_TABSTOP,
0, 30, 250, 250,
hwnd,
(HMENU) 9,
NULL,
NULL);
InsertTabItem(hTab, 10, L"A");
InsertTabItem(hTab, 11, L"B");
}
void InsertTabItem(HWND tabHwnd, UINT id, LPWSTR text)
{
TCITEMW tci = {0};
tci.mask = TCIF_TEXT;
tci.pszText = text;
tci.cchTextMax = lstrlenW(text);
if(SendMessage(tabHwnd, TCM_INSERTITEMW, id, (LPARAM) &tci) == -1) {
MessageBox(NULL,
L"couldn't create the new tab page",
L"tab errror",
MB_OK | MB_ICONERROR);
}
}
解决方案
在创建对话框控件时,缺少WS_CHILD
样式并添加WS_POPUP
样式,导致生成的对话框浮动。
你只需要将其修改为WS_CHILD
样式,并适当修改控件的大小即可达到你想要的效果。
void CreateDialogBox(HWND hwnd)
{
CreateWindowExW(WS_EX_TOOLWINDOW | WS_EX_CONTROLPARENT, // WS_EX_TOOLWINDOW to hide window from ALT+TAB
L"DialogClass", L"Dialog Box",
WS_VISIBLE | WS_SYSMENU | WS_CHILD ,
10, 30, 350, 150,
hTab, NULL, ghInstance, NULL
);
}
void AddTabControl(HWND hwnd)
{
hTab = CreateWindowW(WC_TABCONTROLW, NULL,
WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | WS_TABSTOP,
10, 30, 400, 250,
hwnd,
(HMENU)9,
NULL,
NULL);
InsertTabItem(hTab, 10, L"A");
InsertTabItem(hTab, 11, L"B");
}
它是这样工作的:
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