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008-imGui窗口中的文本框InputText
郁金香灬外挂技术
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VS2017+win10 64位 环境
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学习目标:
多行文本框InputTextMultiline
多行文本框大小设置
// ~ FontSize
IMGUI_API float GetTextLineHeight();
IMGUI_API bool
InputText(
const char* label, //UI名字,不会被显示 相当于人的身份证 以区别不同的UI对象
char* buf, // 显示内容缓冲区 保存文本的变化
size_t buf_size, //显示内容缓冲区大小
//以下可用默认值
ImGuiInputTextFlags flags = 0,
ImGuiInputTextCallback callback = NULL,
void* user_data = NULL);
IMGUI_API bool
InputTextMultiline(
const char* label, //UI名字,不会被显示 相当于人的身份证 以区别不同的UI对象
char* buf,
size_t buf_size,
//以下可用默认值
const ImVec2& size = ImVec2(0, 0), //UI宽度 高度
ImGuiInputTextFlags flags = 0, //显示标志位
ImGuiInputTextCallback callback = NULL, //回调函数
void* user_data = NULL); //用户数组
// Callback function for ImGui::InputText()
typedef int (*ImGuiInputTextCallback)(ImGuiInputTextCallbackData* data);
// int callback(ImGuiInputTextCallbackData* data);
// ImGuiInputTextFlags
enum ImGuiInputTextFlags_
{
ImGuiInputTextFlags_None = 0,
ImGuiInputTextFlags_CharsDecimal = 1 << 0, // Allow 0123456789.+-*/
ImGuiInputTextFlags_CharsHexadecimal = 1 << 1, // Allow 0123456789ABCDEFabcdef
ImGuiInputTextFlags_CharsUppercase = 1 << 2, // Turn a..z into A..Z
ImGuiInputTextFlags_CharsNoBlank = 1 << 3, // Filter out spaces, tabs
ImGuiInputTextFlags_AutoSelectAll = 1 << 4, // Select entire text when first taking mouse focus
ImGuiInputTextFlags_EnterReturnsTrue = 1 << 5, // Return 'true' when Enter is pressed (as opposed to every time the value was modified). Consider looking at the IsItemDeactivatedAfterEdit() function.
ImGuiInputTextFlags_CallbackCompletion = 1 << 6, // Callback on pressing TAB (for completion handling)
ImGuiInputTextFlags_CallbackHistory = 1 << 7, // Callback on pressing Up/Down arrows (for history handling)
ImGuiInputTextFlags_CallbackAlways = 1 << 8, // Callback on each iteration. User code may query cursor position, modify text buffer.
ImGuiInputTextFlags_CallbackCharFilter = 1 << 9, // Callback on character inputs to replace or discard them. Modify 'EventChar' to replace or discard, or return 1 in callback to discard.
ImGuiInputTextFlags_AllowTabInput = 1 << 10, // Pressing TAB input a ' ' character into the text field
ImGuiInputTextFlags_CtrlEnterForNewLine = 1 << 11, // In multi-line mode, unfocus with Enter, add new line with Ctrl+Enter (default is opposite: unfocus with Ctrl+Enter, add line with Enter).
ImGuiInputTextFlags_NoHorizontalScroll = 1 << 12, // Disable following the cursor horizontally
ImGuiInputTextFlags_AlwaysOverwrite = 1 << 13, // Overwrite mode 覆盖模式
ImGuiInputTextFlags_ReadOnly = 1 << 14, // Read-only mode 只读模式
ImGuiInputTextFlags_Password = 1 << 15, // Password mode, display all characters as '*'
ImGuiInputTextFlags_NoUndoRedo = 1 << 16, // Disable undo/redo. Note that input text owns the text data while active, if you want to provide your own undo/redo stack you need e.g. to call ClearActiveID().
ImGuiInputTextFlags_CharsScientific = 1 << 17, // Allow 0123456789.+-*/eE (Scientific notation input)
ImGuiInputTextFlags_CallbackResize = 1 << 18, // Callback on buffer capacity changes request (beyond 'buf_size' parameter value), allowing the string to grow. Notify when the string wants to be resized (for string types which hold a cache of their Size). You will be provided a new BufSize in the callback and NEED to honor it. (see misc/cpp/imgui_stdlib.h for an example of using this)
ImGuiInputTextFlags_CallbackEdit = 1 << 19, // Callback on any edit (note that InputText() already returns true on edit, the callback is useful mainly to manipulate the underlying buffer while focus is active)
ImGuiInputTextFlags_EscapeClearsAll = 1 << 20, // Escape key clears content if not empty, and deactivate otherwise (contrast to default behavior of Escape to revert)
// Obsolete names
//ImGuiInputTextFlags_AlwaysInsertMode = ImGuiInputTextFlags_AlwaysOverwrite // [renamed in 1.82] name was not matching behavior
};
ImGui::Begin();
{
char lineText[256] = "11111111";
int flag = ImGuiInputTextFlags_CallbackCharFilter;// | ImGuiInputTextFlags_CallbackEdit;
ImGui::InputText("InputText1", lineText, IM_ARRAYSIZE(lineText), flag, testEditCallback);
}
ImGui::End();
static int testEditCallback(ImGuiInputTextCallbackData* data)
{
printf("data->EventChar=%d buf=%s EventKey=%d EventFlag=%d",
data->EventChar,
data->Buf,
data->EventKey,
data->EventFlag
);
if (data->EventChar >='a'&& data->EventChar <= 'c')
{
return 1; //过滤 屏蔽掉输入
}
else
{
return 0;
}
}
static int MyCallback(ImGuiInputTextCallbackData* data)
{
if (data->EventFlag == ImGuiInputTextFlags_CallbackCompletion)
{
data->InsertChars(data->CursorPos, "..");
}
else if (data->EventFlag == ImGuiInputTextFlags_CallbackHistory)
{
if (data->EventKey == ImGuiKey_UpArrow)
{
data->DeleteChars(0, data->BufTextLen);
data->InsertChars(0, "Pressed Up!");
data->SelectAll();
}
else if (data->EventKey == ImGuiKey_DownArrow)
{
data->DeleteChars(0, data->BufTextLen);
data->InsertChars(0, "Pressed Down!");
data->SelectAll();
}
}
else if (data->EventFlag == ImGuiInputTextFlags_CallbackEdit)
{
// Toggle casing of first character
char c = data->Buf[0];
if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')) data->Buf[0] ^= 32;
data->BufDirty = true;
// Increment a counter
int* p_int = (int*)data->UserData;
*p_int = *p_int + 1;
}
return 0;
}
};
ImGuidInputTextFlags_无=0,
ImGuidInputTextFlags_CharsDecimal=1<<0,//允许0123456789+-*/
ImGuiInputTextFlags_Chars十六进制=1<<1,//允许0123456789ABCDEFabcdef
ImGuiInputTextFlags_CharsUppercase=1<<2,//将a..z转换为a..z
ImGuidInputTextFlags_CharsNoBlank=1<<3,//筛选出空格、制表符
ImGuidInputTextFlags_AutoSelectAll=1<<4,//第一次获取鼠标焦点时选择整个文本
ImGuiInputTextFlags_EnterReturnsTrue=1<<5,//按下Enter键时返回“true”(与每次修改值时相反)。请考虑查看IsItemDeactivatedAfterEdit()函数。
ImGuidInputTextFlags_CallbackCompletion=1<6,//按TAB键时回调(用于完成处理)
ImGuidInputTextFlags_CallbackHistory=1<<7,//按下上/下箭头时回调(用于历史处理)
ImGuiInputTextFlags_CallbackAlways=1<<8,//每次迭代的回调。用户代码可以查询光标位置,修改文本缓冲区。
ImGuiInputTextFlags_CallbackCharFilter=1<9,//对字符输入进行回调以替换或丢弃它们。修改“EventChar”以替换或丢弃,或在回调中返回1以丢弃。
ImGuidInputTextFlags_AllowTabInput=1<<10,//按TAB键在文本字段中输入一个“ ”字符
ImGuiInputTextFlags_CtrlEnterForNewLine=1<<11,//在多行模式中,使用Enter取消焦点,使用Ctrl+Enter添加新行(默认情况相反:使用Ctrl+Enter取消焦点、使用Enter添加行)。
ImGuidInputTextFlags_NoHorizontalScroll=1<<12,//禁用水平跟随光标
ImGuidInputTextFlags_AlwaysOverwrite=1<<13,//覆盖模式
ImGuidInputTextFlags_ReadOnly=1<<14,//只读模式
ImGuiInputTextFlags_Password=1<<15,//密码模式,将所有字符显示为“*”
ImGuidInputTextFlags_NoUndoRedo=1<<16,//禁用撤消/重做。请注意,输入文本在活动时拥有文本数据,如果您想提供自己的undo/redo堆栈,则需要调用ClearActiveID()。
ImGuidInputTextFlags_CharsScientific=1<<17,//允许0123456789.+-*/eE(科学记数法输入)
ImGuiInputTextFlags_CallbackResize=1<<18,//缓冲区容量更改请求时的回调(超过“buf_size”参数值),允许字符串增长。当字符串需要调整大小时通知(对于保存其大小的缓存的字符串类型)。回调中会为您提供一个新的BufSize,并且需要遵守它。(有关使用它的示例,请参阅misc/cpp/imgui_stdlib.h)
ImGuiInputTextFlags_CallbackEdit=1<<19,//在任何编辑时回调(请注意,InputText()在编辑时已经返回true,回调主要用于在焦点处于活动状态时操作底层缓冲区)
ImGuiInputTextFlags_EscapeClearsAll=1<<20,//如果Escape键不为空,则清除内容,否则将停用(与Escape的默认行为相反)
void CDX11::CreateMyFrame()
{
//创建一个窗口帧
ImGui::Begin(u8"111中文");
//{
// //设置窗口位置
// ImVec2 pos = { 100,100 };
// ImGui::SetWindowPos(pos);
// ImVec2 nSize = { 300,200 };
// ImGui::SetWindowSize(nSize);
//}
文本输入框测试();
ImGui::End();
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