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PODraw on Button click- Visual C++
primarykey
Id
13248883
data
AcceptedAnswerId
0
AnswerCount
2
ClosedDate
CommentCount
0
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CreationDate
2012-11-06T10:17:59.320
FavoriteCount
0
LastActivityDate
2016-03-02T12:33:28.077
LastEditDate
2012-11-06T10:29:40.350
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1682995
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1682995
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0
PostTypeId
1
Score
0
ViewCount
1894
LastEditorDisplayName
text
Body
<p>I need to create rectangles when the button is clicked. I have tried the given code but its not working. i have tried to create a flag "mdraw" that becomes true when a button is clicked. a condition is out in the form_paint where the rectangle will created only when the "mdraw" becomes true. But after clicking the button, nothing comes!</p> <p>I m using windows forms application (CLR). Microsoft visual c++ 2008.</p> <pre><code> #pragma once namespace try1 { using namespace System; using namespace System::ComponentModel; using namespace System::Collections; using namespace System::Windows::Forms; using namespace System::Data; using namespace System::Drawing; /// <summary> /// Summary for Form1 /// /// WARNING: If you change the name of this class, you will need to change the /// 'Resource File Name' property for the managed resource compiler tool /// associated with all .resx files this class depends on. Otherwise, /// the designers will not be able to interact properly with localized /// resources associated with this form. /// </summary> public ref class Form1 : public System::Windows::Forms::Form { public: Form1(void) { InitializeComponent(); // //TODO: Add the constructor code here // } protected: /// <summary> /// Clean up any resources being used. /// </summary> ~Form1() { if (components) { delete components; } } private: System::Windows::Forms::Button^ button1; protected: private: /// <summary> /// Required designer variable. /// </summary> System::ComponentModel::Container ^components; private: System::Windows::Forms::Label^ label1; public: bool mdraw; #pragma region Windows Form Designer generated code /// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary> void InitializeComponent(void) { this->button1 = (gcnew System::Windows::Forms::Button()); this->label1 = (gcnew System::Windows::Forms::Label()); this->SuspendLayout(); // // button1 // this->button1->Location = System::Drawing::Point(98, 35); this->button1->Name = L"button1"; this->button1->Size = System::Drawing::Size(75, 23); this->button1->TabIndex = 0; this->button1->Text = L"button1"; this->button1->UseVisualStyleBackColor = true; this->button1->Click += gcnew System::EventHandler(this, &Form1::button1_Click); // // label1 // this->label1->AutoSize = true; this->label1->Location = System::Drawing::Point(51, 77); this->label1->Name = L"label1"; this->label1->Size = System::Drawing::Size(0, 13); this->label1->TabIndex = 1; // // Form1 // this->AutoScaleDimensions = System::Drawing::SizeF(6, 13); this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font; this->ClientSize = System::Drawing::Size(284, 262); this->Controls->Add(this->label1); this->Controls->Add(this->button1); this->Name = L"Form1"; this->Text = L"Form1"; this->Load += gcnew System::EventHandler(this, &Form1::Form1_Load); this->Paint += gcnew System::Windows::Forms::PaintEventHandler(this, &Form1::Form1_Paint); this->ResumeLayout(false); this->PerformLayout(); } #pragma endregion private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e) { mdraw=true; label1->Text=button1->Text; } private: System::Void Form1_Paint(System::Object^ sender, System::Windows::Forms::PaintEventArgs^ e) { Pen^ redPen = gcnew Pen(Color::Red); int i,n; i=20; n=0; if(mdraw) { while(n<=50) { e->Graphics->DrawRectangle(redPen,i,140,10,60); i=i+20; n+=1; } } } }; } </code></pre>
Tags
<visual-studio-2008><visual-c++>
Title
Draw on Button click- Visual C++
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1. USSameer Jain
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1. USSameer Jain
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